If the perimeter of a semi-circular park is 72m, find it's area and perimeter. solve it.
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=> pi *r + 2r = 72
=> 22r/7 + 2r = 72
=> 36r/ 7 = 72
=> r = 72 * 7 / 36
=> r = 2* 7
=> r = 14 m
Area = pi *r^2 /2
= 22 * 14 * 14 / 2 * 7
= 22 * 14
= 308 m^2
Perimeter of semi circle = 72 m
=> pi *r + 2r = 72
=> 22r/7 + 2r = 72
=> 36r/ 7 = 72
=> r = 72 * 7 / 36
=> r = 2* 7
=> r = 14 m
Area = pi *r^2 /2
= 22 * 14 * 14 / 2 * 7
= 22 * 14
= 308 m^2
hope it helped ⚡
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