find the area of a semi circle whose perimeter is 144cm
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The perimeter of semicircle is 144 cm, which is equal to 2r + (pi)r, where r= radius.
2r + (pi)r = r(14+22)/7 = r(36/7) so r = 144*7/36 = 28 cm.
The area of the semicircle is = (22/7)*28^2/2 = 1232 sq cm.
I HOPE IT HELPS
2r + (pi)r = r(14+22)/7 = r(36/7) so r = 144*7/36 = 28 cm.
The area of the semicircle is = (22/7)*28^2/2 = 1232 sq cm.
I HOPE IT HELPS
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