please help me with the circle ones 3

Mathematics
Tutor: None Selected Time limit: 1 Day

Mar 5th, 2015

s = 150 m / 15 sides = 10 m length of side

A = 1/2 * a * s

a = 1/2*10*cot ( 180/15)

a = 23.52

Area = 1/2 * 23.52 * 10

Area = 117.6 m^2

Mar 5th, 2015

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