The length of a chain used as boundary of the semicircular park is 90cm. find the area of the park
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perimter=90
2*pi*r=90
r=90*7/22*1/2
=630/44
area=pi*r*r
=22/7*630/44*630/44
=644.31 metre2
2*pi*r=90
r=90*7/22*1/2
=630/44
area=pi*r*r
=22/7*630/44*630/44
=644.31 metre2
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