If the perimeter of semi-circular park is 72 m. Find its radius and area.
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If the perimeter of semi-circular park is 72 m. Find its radius and area.
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Step-by-step explanation:
if perimeter is 72, the radius will be it's half that is,
72/2=36m
it's area is 36×4=144m
Step-by-step explanation:
let radius = r
perimeter of a semi-circular park = (π + 2)r = 72
=> (22/7 + 2)r = 72
=> (36/7)r = 72
=> r = 72×7/36 = 14 m
area = π×r×r/2 = (22/7) × 14 × 14/2 = 308