If the perimeter of a semi-circular park is 72 m, find its area and radius.
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Step-by-step explanation:
Area of semi circle = πr^2/2
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Answer:
Area of semi-circle = (pie.r)+2r
72=22/7×r+2r
72=22r/7+2r
7×72=(22r+14r)
504=36r
504/36=r
14=r
Area of semicircle=pie.r^2
=(22/7×14×14)/2
=(22×2×14)/2
=22×14
=308cm^2
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