Practice set : 4.3
1) The perimeter of a semicircle
diameter.
72 cm. Find the area
on
area
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The perimeter of semicircle = πr
The perimeter of semicircle = πr = 3.14×36 = 100.48cm
The area of semicircle = πr^2 /2
= 3.14×36×36/2
=4069.44/2
=2,034.72 sq. cm
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