Pentagon Area help!?

How would you find the apothem and perimeter if you were just given the area of 800 square centimeters?

2007-12-05 11:03:03 · 1 answers · asked by L337est 4 in Science & Mathematics ➔ Mathematics

1 answers

A - area
a - apothem
s - side
p – perimeter

A = 800
s = 2 a tan(36°)
A = (5/2) a s = 5 a² tan(36°)
a = √[A cot(36°)/5] = 14.84 cm
s = 21.56 cm
p = 5 s = 107.82 cm

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2007-12-05 12:22:46 · answer #1 · answered by oregfiu 7 · 1⤊ 0⤋

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