Q7 of 64 Page 74

Calculate the perimeter and area of the semicircle whose radius is 14 cm.

Given:

radius (r)= 14cm


(a) perimeter of semi-circle = 1/2 (2πr) + r + r


= π r + 2r



perimeter of semi-circle = 44 + 28 = 72cm


(b) area of semi-circle =



area of semi-circle = 308 cm2


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