if the perimeter of semi circular park is 72m find its radius and area
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perimeter of a semi circle =half of its perimeter of whole circle +diameter
ie 1/2 x 2 x pie x r+ 2 x r Iperimeter=2 x pie x r and diameter =2 r
ie 22/7 x r+ 2r = 72
22 x 3r=72 x 7
3r=504/22
3r=22.9 (approx)
r=22.9/3
r=7.63
radius =7.63 m (approx)
area=pie xr2
=22/7 x 7.632
=182.96 m (approx)
ie 1/2 x 2 x pie x r+ 2 x r Iperimeter=2 x pie x r and diameter =2 r
ie 22/7 x r+ 2r = 72
22 x 3r=72 x 7
3r=504/22
3r=22.9 (approx)
r=22.9/3
r=7.63
radius =7.63 m (approx)
area=pie xr2
=22/7 x 7.632
=182.96 m (approx)
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