document.write( "Question 161346: Find the area of a regular pentagon with sides 7 millimeters long and apothem 4.8 mm long. (A=1/2aP) Please help \n" ); document.write( "
Algebra.Com's Answer #118860 by jojo14344(1513)\"\" \"About 
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\n" ); document.write( "Okay, you've given the \"AREA=%281%2F2%29aP\"---------> EQN 1
\n" ); document.write( "where \"a=side\"; \"P=apothem\"
\n" ); document.write( "This is a formula in finding the Area for a RIGHT triangle. Good Start! We know too the side is cut into half extending a line to the center (apothem) to make the triangle right? So we'll use \"a=%281%2F2%29a=%281%2F2%297mm=3.5mm\" to EQN 1.
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\n" ); document.write( "Now, \"A=%281%2F2%29%283.5%29%284.8mm%29\"
\n" ); document.write( "\"A=8.4mm%5E2\", ONLY for 1 triangle, but there are \"highlight%2810%29\" triangles in a regular pentagon. So,
\n" ); document.write( "\"A=8.4mm%5E2%2A10=84mm%5E2\" ANSWER
\n" ); document.write( "* See www.math-prof.com
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
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