document.write( "Question 429042: Find the area of the regular polygons. Give the answer to the nearest tenth. Pentagon with side 10cm. \r
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\n" ); document.write( "\n" ); document.write( "The area of a regular hexagon is 36in squared. Find the length of a side. ROUnd your answer to the nearest tenth.
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Algebra.Com's Answer #298111 by Gogonati(855)\"\" \"About 
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Solution:The central angle of pentagon is 360/5=72 degrees.The area of pentagon is given by the formula:\r
\n" ); document.write( "\n" ); document.write( "\"A=%281%2F2%29%2A%28p%2Aa%29\", where p=50 inches, is the perimeter of pentagon and a is the\r
\n" ); document.write( "\n" ); document.write( "line segment perpendicular from center to the base: \"a=5%2Ftan%2836%29\", and area:\r
\n" ); document.write( "\n" ); document.write( "\"A=%28%281%2F2%29%2A50%29%2F%28tan%2836%29%29\"\r
\n" ); document.write( "\n" ); document.write( "A=39.4 square inches.\r
\n" ); document.write( "\n" ); document.write( "Done.
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