Question

Find the area of a semi-circular park if its perimeter is 360 m.
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Answer 1

Answer:

Perimeter of semicircle- πr + 2r

360 = 22/7 × r + 2r

360× 7/22 = 3r

114.54 = 3r

r = 38.6 m

area of semicircle- πr^2/2

= 22/7× 38.6×38.6/2

= 2339 m^2

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