Seudónimo
Seudónimo
22-12-2015
Mathematics
contestada
Find the area of the regular pentagon.
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taskmasters
taskmasters
22-12-2015
AREA OF A REGULAR PENTAGON EQUATION:
A = 1/4 √5(5+2√5) a² ; a = side
A = 1/4 * √5(5+2√5) * 8²
A = 1/4 * √5(5+2(2.24) * 64
A = 1/4 * √5(5+4.48) * 64
A = 1/4 * √5(9.48 * 64
A = 1/4 * √47.4 * 64
A = 1/4 * 6.88 * 64
A = 1/4 * 440.32
A = 110.08 cm²
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