if the perimeter of a semi circular park is 72m find its area and radius
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perimeter of semi circle = πr
72=(22/7)r
r = 72/π
r = 22.90 m
Area of semi circle = πr^2/2
= π×72×72/π×π×2
= 2592/π
= 2592×7/22
= 824.72 m^2
72=(22/7)r
r = 72/π
r = 22.90 m
Area of semi circle = πr^2/2
= π×72×72/π×π×2
= 2592/π
= 2592×7/22
= 824.72 m^2
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