{"id":53699,"date":"2021-06-03T14:55:40","date_gmt":"2021-06-03T09:25:40","guid":{"rendered":"https:\/\/samacheerkalviguru.com\/?p=53699"},"modified":"2021-06-03T14:55:40","modified_gmt":"2021-06-03T09:25:40","slug":"samacheer-kalvi-10th-maths-guide-chapter-7-ex-7-4-in-tamil","status":"publish","type":"post","link":"https:\/\/samacheerkalviguru.com\/samacheer-kalvi-10th-maths-guide-chapter-7-ex-7-4-in-tamil\/","title":{"rendered":"Samacheer Kalvi 10th Maths Guide Chapter 7 \u0b85\u0bb3\u0bb5\u0bbf\u0baf\u0bb2\u0bcd Ex 7.4"},"content":{"rendered":"

Tamilnadu State Board New Syllabus\u00a0Samacheer Kalvi 10th Maths Guide<\/a> Pdf Chapter 7 \u0b85\u0bb3\u0bb5\u0bbf\u0baf\u0bb2\u0bcd Ex 7.4 Textbook Questions and Answers, Notes.<\/p>\n

TN Board 10th Maths Solutions Chapter 7 \u0b85\u0bb3\u0bb5\u0bbf\u0baf\u0bb2\u0bcd Ex 7.4<\/h2>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 1.
\n12 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b86\u0bb0\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b93\u0bb0\u0bcd \u0b85\u0bb2\u0bc1\u0bae\u0bbf\u0ba9\u0bbf\u0baf\u0b95\u0bcd \u0b95\u0bcb\u0bb3\u0bae\u0bcd \u0b89\u0bb0\u0bc1\u0b95\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bc1 8 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b86\u0bb0\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b93\u0bb0\u0bcd \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbe\u0b95 – \u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8 :
\nR = 8 \u0b9a\u0bc6.\u0bae\u0bc0
\nH = ?
\n\u0b95\u0bcb\u0bb3\u0bae\u0bcd :
\nr = 12 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1= \u0b95\u0bcb\u0bb3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n\u03c0R2<\/sup>H = \\(\\frac { 4 }{ 3 }\\)\/ r3<\/sup>
\n8 x 8 x H = \\(\\frac { 4 }{ 3 }\\) x 12 x 12 x 12
\nH = \\(\\frac{4 \\times 12 \\times 12 \\times 12}{3 \\times 8 \\times 8}\\)
\nH = 36 \u0b9a\u0bc6.\u0bae\u0bc0<\/p>\n

\"Samacheer<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 2.
\n14 \u0b9a\u0bc6.\u0bae\u0bc0 \u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b95\u0bc1\u0bb4\u0bbe\u0baf\u0bbf\u0bb2\u0bbf\u0bb0\u0bc1\u0ba8\u0bcd\u0ba4\u0bc1 15\u0b95\u0bbf.\u0bae\u0bc0\/\u0bae\u0ba3\u0bbf \u0b8e\u0ba9\u0bcd\u0bb1 \u0bb5\u0bc7\u0b95\u0ba4\u0bcd\u0ba4\u0bbf\u0bb2\u0bcd 50\u0bae\u0bc0 \u0ba8\u0bc0\u0bb3\u0bae\u0bcd \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd 44 \u0bae\u0bc0 \u0b85\u0b95\u0bb2\u0bae\u0bcd \u0b95\u0bca\u0ba3\u0bcd\u0b9f \u0b92\u0bb0\u0bc1 \u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0b95 \u0bb5\u0b9f\u0bbf\u0bb5\u0ba4\u0bcd \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0ba9\u0bc1\u0bb3\u0bcd \u0ba4\u0ba3\u0bcd\u0ba3\u0bc0\u0bb0\u0bcd \u0baa\u0bbe\u0baf\u0bcd\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0b8e\u0bb5\u0bcd\u0bb5\u0bb3\u0bb5\u0bc1 \u0ba8\u0bc7\u0bb0\u0ba4\u0bcd\u0ba4\u0bbf\u0bb2\u0bcd \u0ba4\u0ba3\u0bcd\u0ba3\u0bc0 \u0bb0\u0bbf\u0ba9\u0bcd \u0bae\u0b9f\u0bcd\u0b9f\u0bae\u0bcd 21 \u0b9a\u0bc6.\u0bae\u0bc0 – \u0b95\u0bcd\u0b95\u0bc1 \u0b89\u0baf\u0bb0\u0bc1\u0bae\u0bcd.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8 : r = 7 \u0b9a\u0bc6.\u0bae\u0bc0
\nh= 1500000 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0b95 \u0bb5\u0b9f\u0bbf\u0bb5 \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf :
\nl = 50 \u0bae\u0bc0 = 5000 \u0b9a\u0bc6.\u0bae\u0bc0
\nb = 44 \u0bae\u0bc0 = 4400 \u0b9a\u0bc6.\u0bae\u0bc0
\nh = 21 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \u03c0r2<\/sup> \u0b95.\u0b85
\n= \\(\\frac { 22 }{ 7 }\\) x 7 x 7 x 1500000
\n= 231000000 \u0b9a\u0bc6.\u0bae\u0bc03<\/sup>
\n\u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n= lbh \u0b95\u0ba9 \u0b85
\n= 5000 x 4400 x 21
\n= 462000000 \u0b9a\u0bc6.\u0bae\u0bc0<\/p>\n

\u0ba8\u0bc7\u0bb0\u0bae\u0bcd = \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 \/ \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n= \\(\\frac{462000000}{231000000}\\)
\n= 2 \u0bae\u0ba3\u0bbf\u0b95\u0bb3\u0bcd.<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 3.
\n\u0bae\u0bc1\u0bb4\u0bc1\u0bae\u0bc8\u0baf\u0bbe\u0b95 \u0ba8\u0bc0\u0bb0\u0bbe\u0bb2\u0bcd \u0ba8\u0bbf\u0bb0\u0bae\u0bcd\u0baa\u0bbf\u0baf\u0bc1\u0bb3\u0bcd\u0bb3 \u0b92\u0bb0\u0bc1 \u0b95\u0bc2\u0bae\u0bcd\u0baa\u0bc1 \u0bb5\u0b9f\u0bbf\u0bb5\u0b95\u0bcd \u0b95\u0bc1\u0b9f\u0bc1\u0bb5\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b86\u0bb0\u0bae\u0bcd r \u0b85\u0bb2\u0b95\u0bc1\u0b95\u0bb3\u0bcd \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd h \u0b85\u0bb2\u0b95\u0bc1\u0b95\u0bb3\u0bcd \u0b86\u0b95\u0bc1\u0bae\u0bcd. \u0ba8\u0bc0\u0bb0\u0bbe\u0ba9\u0ba4\u0bc1 xr \u0b85\u0bb2\u0b95\u0bc1\u0b95\u0bb3\u0bcd \u0b86\u0bb0\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0bae\u0bb1\u0bcd\u0bb1\u0bca\u0bb0\u0bc1 \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0bb5\u0b9f\u0bbf\u0bb5\u0b95\u0bcd \u0b95\u0bc1\u0b9f\u0bc1\u0bb5\u0bc8\u0b95\u0bcd\u0b95\u0bc1 \u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bbe\u0bb2\u0bcd \u0ba8\u0bc0\u0bb0\u0bbf\u0ba9\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8 :
\n\u0b89\u0baf\u0bb0\u0bae\u0bcd = ?
\n\u0b86\u0bb0\u0bae\u0bcd = xr \u0b85\u0bb2\u0b95\u0bc1\u0b95\u0bb3\u0bcd<\/p>\n

\u0b95\u0bc2\u0bae\u0bcd\u0baa\u0bc1\u0bb5\u0b9f\u0bbf\u0bb5 \u0b95\u0bc1\u0b9f\u0bc1\u0bb5\u0bc8 :
\n\u0b86\u0bb0\u0bae\u0bcd r \u0b85\u0bb2\u0b95\u0bc1\u0b95\u0bb3\u0bcd
\n\u0b89\u0baf\u0bb0\u0bae\u0bcd h \u0b85\u0bb2\u0b95\u0bc1\u0b95\u0bb3\u0bcd<\/p>\n

\u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \u0b95\u0bc2\u0bae\u0bcd\u0baa\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n\u03c0R2<\/sup>H = \\(\\frac { 1 }{ 3 }\\) \u03c0r2<\/sup>H
\n(xr)2<\/sup>H = \\(\\frac { 1 }{ 3 }\\)r2<\/sup>H
\nx2<\/sup>r2<\/sup>H = \\(\\frac { 1 }{ 3 }\\)r2<\/sup>H
\nH = \\(\\frac{r^{2} \\mathrm{~h}}{3 x^{2}{r}^{2}}\\)
\nH = \\(\\frac{\\mathrm{h}}{3 x^{2}}\\) \u0b9a\u0bc6.\u0bae\u0bc03<\/sup><\/p>\n

\"Samacheer<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 4.
\n\u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0bae\u0bcd 14 \u0b9a\u0bc6.\u0bae\u0bc0. \u0b89\u0baf\u0bb0\u0bae\u0bcd 8\u0b9a\u0bc6.\u0bae\u0bc0 \u0b89\u0b9f\u0bc8\u0baf \u0b92\u0bb0\u0bc1 \u0ba4\u0bbf\u0ba3\u0bcd\u0bae \u0ba8\u0bc7\u0bb0\u0bcd\u0bb5\u0b9f\u0bcd\u0b9f\u0b95\u0bcd \u0b95\u0bc2\u0bae\u0bcd\u0baa\u0bc1 , \u0b93\u0bb0\u0bcd \u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b95\u0bcb\u0bb3\u0bae\u0bbe\u0b95 \u0b89\u0bb0\u0bc1\u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0b95\u0bcb\u0bb3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0bb5\u0bc6\u0bb3\u0bbf\u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0bae\u0bcd 10 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b8e\u0ba9\u0bbf\u0bb2\u0bcd, \u0b89\u0bb3\u0bcd\u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0ba4\u0bcd\u0ba4\u0bc8\u0b95\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b95\u0bcb\u0bb3\u0bae\u0bcd :
\nR = 5 \u0b9a\u0bc6.\u0bae\u0bc0
\nr = ?
\n\u0b95\u0bc2\u0bae\u0bcd\u0baa\u0bc1 :
\nr = 7 \u0b9a\u0bc6.\u0bae\u0bc0
\nh = 8 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b85\u0bb0\u0bc8\u0b95\u0bcd\u0b95\u0bcb\u0bb3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \u0b95\u0bc2\u0bae\u0bcd\u0baa\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n\\(\\frac { 4 }{ 3 }\\) \u03c0(R3<\/sup>-r3<\/sup>) = \\(\\frac { 1 }{ 3 }\\) \u03c0r2<\/sup>H
\n4(53<\/sup> – r3<\/sup>) = 7 x 7 x 8
\n(125-r3<\/sup>) = \\(\\frac{7 \\times 7 \\times 8}{4}\\)
\n125 – r3<\/sup> = 98
\n-r3<\/sup> = 98 – 125
\n-r3<\/sup> = -27
\nr3<\/sup> = 27 = 33<\/sup>
\nr = 3 \u0b9a\u0bc6.\u0bae\u0bc0)
\n\u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0bae\u0bcd = 2r = 2 x 3 = 6 \u0b9a\u0bc6.\u0bae\u0bc0<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 5.
\n\u0b9a\u0bc0\u0ba9\u0bc1 \u0bb5\u0bc0\u0b9f\u0bcd\u0b9f\u0bbf\u0ba9\u0bcd \u0bae\u0bc7\u0bb2\u0bcd\u0ba8\u0bbf\u0bb2\u0bc8 \u0ba8\u0bc0\u0bb0\u0bcd\u0ba4\u0bcd\u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0bb5\u0b9f\u0bbf\u0bb5\u0bbf\u0bb2\u0bcd \u0b89\u0bb3\u0bcd\u0bb3\u0ba4\u0bc1. \u0b85\u0ba4\u0ba9\u0bcd \u0b86\u0bb0\u0bae\u0bcd 60 \u0b9a\u0bc6.\u0bae\u0bc0 \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd 105 \u0b9a\u0bc6.\u0bae\u0bc0 2\u0bae\u0bc0 x 1.5 \u0bae\u0bc0 x 1 \u0bae\u0bc0 \u0baa\u0bb0\u0bbf\u0ba3\u0bbe\u0bae\u0b99\u0bcd\u0b95\u0bb3\u0bc8 \u0b89\u0b9f\u0bc8\u0baf \u0b92\u0bb0\u0bc1 \u0b95\u0ba9\u0b9a\u0bcd\u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0b95\u0b95\u0bcd \u0b95\u0bc0\u0bb4\u0bcd\u0ba8\u0bbf\u0bb2\u0bc8 \u0ba8\u0bc0\u0bb0\u0bcd \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0bb2\u0bbf\u0bb0\u0bc1\u0ba8\u0bcd\u0ba4\u0bc1 \u0ba8\u0bc0\u0bb0\u0bcd \u0b89\u0ba8\u0bcd\u0ba4\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bc1 \u0bae\u0bc7\u0bb2\u0bc7\u0baf\u0bc1\u0bb3\u0bcd\u0bb3 \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0bb5\u0b9f\u0bbf\u0bb5\u0ba4\u0bcd \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf \u0bae\u0bc1\u0bb4\u0bc1\u0bae\u0bc8\u0baf\u0bbe\u0b95
\n\u0ba8\u0bbf\u0bb0\u0baa\u0bcd\u0baa\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0ba4\u0bca\u0b9f\u0b95\u0bcd\u0b95\u0ba4\u0bcd\u0ba4\u0bbf\u0bb2\u0bcd \u0b95\u0bc0\u0bb4\u0bcd\u0ba4\u0bcd \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0bb2\u0bcd \u0ba8\u0bc0\u0bb0\u0bcd \u0bae\u0bc1\u0bb4\u0bc1\u0bae\u0bc8\u0baf\u0bbe\u0b95 \u0b87\u0bb0\u0bc1\u0baa\u0bcd\u0baa\u0ba4\u0bbe\u0b95\u0b95\u0bcd \u0b95\u0bb0\u0bc1\u0ba4\u0bc1\u0b95. \u0bae\u0bc7\u0bb2\u0bcd \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0b95\u0bcd\u0b95\u0bc1 \u0ba8\u0bc0\u0bb0\u0bcd \u0b8f\u0bb1\u0bcd\u0bb1\u0bbf\u0baf \u0baa\u0bbf\u0bb1\u0b95\u0bc1 \u0bae\u0bc0\u0ba4\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0ba8\u0bc0\u0bb0\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc8\u0b95\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8 :
\nr = 60 \u0b9a\u0bc6.\u0bae\u0bc0
\nh = 105 \u0b9a\u0bc6.\u0bae\u0bc0<\/p>\n

\u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0b95 \u0bb5\u0b9f\u0bbf\u0bb5 \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf :
\nl = 2 \u0bae\u0bc0 = 200 \u0b9a\u0bc6.\u0bae\u0bc0
\nb = 1.5 \u0bae\u0bc0 = 150 \u0b9a\u0bc6.\u0bae\u0bc0
\nh = 1 \u0bae\u0bc0 = 100 \u0b9a\u0bc6.\u0bae\u0bc0<\/p>\n

\u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \u03c0r2<\/sup>h \u0b95.\u0b85.
\n= \\(\\frac { 22 }{ 7 }\\) x 60 x 60 x 105
\n= 1188000 \u0b9a\u0bc6.\u0bae\u0bc03<\/sup>
\n\u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0b95 \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = lbh \u0b95.\u0b85
\n= 200 x 150 x 100
\n= 3000000 \u0b9a\u0bc6.\u0bae\u0bc03<\/sup>
\n\u0bae\u0bc7\u0bb2\u0bcd \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0b95\u0bcd\u0b95\u0bc1 \u0ba8\u0bc0\u0bb0\u0bcd \u0b8f\u0bb1\u0bcd\u0bb1\u0bbf\u0baf \u0baa\u0bbf\u0bb1\u0b95\u0bc1 \u0bae\u0bc0\u0ba4\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0ba8\u0bc0\u0bb0\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0b95 \u0ba4\u0bca\u0b9f\u0bcd\u0b9f\u0bbf\u0baf\u0bbf\u0ba9\u0bcd \u0b95.\u0b85 – \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95.\u0b85
\n= 3000000 – 1188000
\n= 1812000 \u0b9a\u0bc6.\u0bae\u0bc03<\/sup><\/p>\n

\"Samacheer<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 6.
\n\u0b93\u0bb0\u0bcd \u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b85\u0bb0\u0bc8\u0b95\u0bcd\u0b95\u0bcb\u0bb3 \u0b93\u0b9f\u0bcd\u0b9f\u0bbf\u0ba9\u0bcd \u0b89\u0b9f\u0bcd\u0baa\u0bc1\u0bb1 \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0bb5\u0bc6\u0bb3\u0bbf\u0baa\u0bcd\u0baa\u0bc1\u0bb1 \u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0b99\u0bcd\u0b95\u0bb3\u0bcd \u0bae\u0bc1\u0bb1\u0bc8\u0baf\u0bc7 6 \u0b9a\u0bc6.\u0bae\u0bc0 \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd 10 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b86\u0b95\u0bc1\u0bae\u0bcd. \u0b85\u0ba4\u0bc1 \u0b89\u0bb0\u0bc1\u0b95\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bc1 14 \u0b9a\u0bc6.\u0bae\u0bc0 \u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b92\u0bb0\u0bc1 \u0ba4\u0bbf\u0ba3\u0bcd\u0bae \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbe\u0b95\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bbe\u0bb2\u0bcd, \u0b85\u0bb5\u0bcd\u0bb5\u0bc1\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8 :
\nR = 7 \u0b9a\u0bc6.\u0bae\u0bc0
\nH = ?
\n\u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b85\u0bb0\u0bc8\u0b95\u0bcd \u0b95\u0bcb\u0bb3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 r = 3 \u0b9a\u0bc6.\u0bae\u0bc0
\nR = 5 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b85\u0bb0\u0bc8\u0b95\u0bcd\u0b95\u0bcb\u0bb3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n\"Samacheer<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 7.
\n6 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b86\u0bb0\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b92\u0bb0\u0bc1 \u0ba4\u0bbf\u0ba3\u0bcd\u0bae\u0b95\u0bcd \u0b95\u0bcb\u0bb3\u0bae\u0bcd \u0b89\u0bb0\u0bc1\u0b95\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bc1\u0b9a\u0bcd \u0b9a\u0bc0\u0bb0\u0bbe\u0ba9 \u0ba4\u0b9f\u0bbf\u0bae\u0ba9\u0bc1\u0bb3\u0bcd\u0bb3 \u0b93\u0bb0\u0bcd \u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbe\u0b95 \u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0bb5\u0bc6\u0bb3\u0bbf \u0b86\u0bb0\u0bae\u0bcd 5 \u0b9a\u0bc6.\u0bae\u0bc0 \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd 32 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b8e\u0ba9\u0bbf\u0bb2\u0bcd, \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0ba4\u0b9f\u0bbf\u0bae\u0ba9\u0bc8\u0b95\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95.
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b89\u0bb0\u0bc1\u0bb3\u0bc8:
\nR = 5 \u0b9a\u0bc6.\u0bae\u0bc0
\nr = ?
\nh = 32 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b95\u0bcb\u0bb3\u0bae\u0bcd :
\nr = 6 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0b89\u0bb3\u0bcd\u0bb3\u0bc0\u0b9f\u0bb1\u0bcd\u0bb1 \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b95\u0ba9\u0b85\u0bb3\u0bb5\u0bc1 = \u0b95\u0bcb\u0bb3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9\u0b85\u0bb3\u0bb5\u0bc1
\n\u03c0(R2<\/sup> – r2<\/sup>)h = \\(\\frac { 4 }{ 3 }\\) \u03c0r3<\/sup>
\n(52<\/sup> – r2<\/sup>)32 = \\(\\frac { 4 }{ 3 }\\) x 6 x 6 x 6
\n(25 – r2<\/sup>) = \\(\\frac{4 \\times 2 \\times 6 \\times 6}{32}\\)
\n25 – r2<\/sup> = 16
\nr = 4 \u0b9a\u0bc6.\u0bae\u0bc0
\n\u0ba4\u0b9f\u0bbf\u0bae\u0ba9\u0bcd = R-r = 5-4 \u0b9a\u0bc6.\u0bae\u0bc0 = 1 \u0b9a\u0bc6.\u0bae\u0bc0<\/p>\n

\"Samacheer<\/p>\n

\u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 8.
\n\u0b93\u0bb0\u0bcd \u0b85\u0bb0\u0bc8\u0b95\u0bcd\u0b95\u0bcb\u0bb3 \u0bb5\u0b9f\u0bbf\u0bb5\u0b95\u0bcd \u0b95\u0bbf\u0ba3\u0bcd\u0ba3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0bb5\u0bbf\u0bb3\u0bbf\u0bae\u0bcd\u0baa\u0bc1\u0bb5\u0bb0\u0bc8\u0baf\u0bbf\u0bb2\u0bcd \u0baa\u0bb4\u0b9a\u0bcd\u0b9a\u0bbe\u0bb1\u0bc1\u0ba8\u0bbf\u0bb0\u0bae\u0bcd\u0baa\u0bbf\u0baf\u0bc1\u0bb3\u0bcd\u0bb3\u0ba4\u0bc1. \u0b89\u0baf\u0bb0\u0ba4\u0bcd\u0ba4\u0bc8\u0bb5\u0bbf\u0b9f 50% \u0b85\u0ba4\u0bbf\u0b95 \u0b86\u0bb0\u0bae\u0bcd \u0b95\u0bca\u0ba3\u0bcd\u0b9f \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0bb5\u0b9f\u0bbf\u0bb5\u0baa\u0bcd\u0baa\u0bbe\u0ba4\u0bcd\u0ba4\u0bbf\u0bb0\u0ba4\u0bcd\u0ba4\u0bbf\u0bb1\u0bcd\u0b95\u0bc1\u0baa\u0bcd \u0baa\u0bb4\u0b9a\u0bcd\u0b9a\u0bbe\u0bb1\u0bc1 \u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0b85\u0bb0\u0bc8\u0b95\u0bcd\u0b95\u0bcb\u0bb3\u0bae\u0bcd \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0b86\u0b95\u0bbf\u0baf\u0bb5\u0bb1\u0bcd\u0bb1\u0bbf\u0ba9\u0bcd \u0bb5\u0bbf\u0b9f\u0bcd\u0b9f\u0b99\u0bcd\u0b95\u0bb3\u0bcd \u0b9a\u0bae\u0bae\u0bbe\u0ba9\u0bbe\u0bb2\u0bcd \u0b95\u0bbf\u0ba3\u0bcd\u0ba3\u0ba4\u0bcd\u0ba4\u0bbf\u0bb2\u0bbf\u0bb0\u0bc1\u0ba8\u0bcd\u0ba4\u0bc1 \u0b8e\u0bb5\u0bcd\u0bb5\u0bb3\u0bb5\u0bc1 \u0b9a\u0ba4\u0bb5\u0bc0\u0ba4\u0baa\u0bcd \u0baa\u0bb4\u0b9a\u0bcd\u0b9a\u0bbe\u0bb1\u0bc1 \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0bb5\u0b9f\u0bbf\u0bb5 \u0baa\u0bbe\u0ba4\u0bcd\u0ba4\u0bbf\u0bb0\u0ba4\u0bcd\u0ba4\u0bbf\u0bb1\u0bcd\u0b95\u0bc1 \u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0bae\u0bcd?
\n\u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 :
\n\u0b85\u0bb0\u0bc8\u0b95\u0bcd\u0b95\u0bcb\u0bb3 \u0b95\u0bbf\u0ba3\u0bcd\u0ba3\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1 = \\(\\frac{2}{3}\\)\u03c0r3<\/sup>\u0b95.\u0b85
\n\u0b89\u0baf\u0bb0\u0bae\u0bcd = h
\nr = h + h x \\(\\frac { 50 }{ 100 }\\) = h(1 + \\(\\frac { 1 }{ 2 }\\)) = \\(\\frac{3 h}{2}\\)
\nr = \\(\\frac{3 h}{2}\\) \u21d2 h = \\(\\frac{2 r}{3}\\)
\n\u0b89\u0bb0\u0bc1\u0bb3\u0bc8 \u0baa\u0bbe\u0ba4\u0bcd\u0ba4\u0bbf\u0bb0\u0ba4\u0bcd\u0ba4\u0bbf\u0ba9\u0bcd \u0b95\u0ba9 \u0b85\u0bb3\u0bb5\u0bc1
\n\"Samacheer
\n= 100%<\/p>\n","protected":false},"excerpt":{"rendered":"

Tamilnadu State Board New Syllabus\u00a0Samacheer Kalvi 10th Maths Guide Pdf Chapter 7 \u0b85\u0bb3\u0bb5\u0bbf\u0baf\u0bb2\u0bcd Ex 7.4 Textbook Questions and Answers, Notes. TN Board 10th Maths Solutions Chapter 7 \u0b85\u0bb3\u0bb5\u0bbf\u0baf\u0bb2\u0bcd Ex 7.4 \u0b95\u0bc7\u0bb3\u0bcd\u0bb5\u0bbf 1. 12 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b86\u0bb0\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b93\u0bb0\u0bcd \u0b85\u0bb2\u0bc1\u0bae\u0bbf\u0ba9\u0bbf\u0baf\u0b95\u0bcd \u0b95\u0bcb\u0bb3\u0bae\u0bcd \u0b89\u0bb0\u0bc1\u0b95\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0b9f\u0bcd\u0b9f\u0bc1 8 \u0b9a\u0bc6.\u0bae\u0bc0 \u0b86\u0bb0\u0bae\u0bc1\u0bb3\u0bcd\u0bb3 \u0b93\u0bb0\u0bcd \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbe\u0b95 – \u0bae\u0bbe\u0bb1\u0bcd\u0bb1\u0baa\u0bcd\u0baa\u0b9f\u0bc1\u0b95\u0bbf\u0bb1\u0ba4\u0bc1. \u0b89\u0bb0\u0bc1\u0bb3\u0bc8\u0baf\u0bbf\u0ba9\u0bcd \u0b89\u0baf\u0bb0\u0bae\u0bcd \u0b95\u0bbe\u0ba3\u0bcd\u0b95. \u0ba4\u0bc0\u0bb0\u0bcd\u0bb5\u0bc1 : \u0b89\u0bb0\u0bc1\u0bb3\u0bc8 : R = …<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[2],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/posts\/53699"}],"collection":[{"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/comments?post=53699"}],"version-history":[{"count":0,"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/posts\/53699\/revisions"}],"wp:attachment":[{"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/media?parent=53699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/categories?post=53699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samacheerkalviguru.com\/wp-json\/wp\/v2\/tags?post=53699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}