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Question
Find the area and perimeter of the following semi-circle :
Radius= 1.4 cm
Solution
Area of the semi-circle = `1/2 pi "r"^2`
`= 1/2 xx 22/7 xx 1.4 xx 1.4`
= 3.08 cm2
Perimeter of the semi-circle = (πr + 2r)
`= (22/7 xx 1..4) + (2 xx 1.4)`
= 7.2 cm
Therefore, Area= 3.08 cm2 and Perimeter= 7.2 cm.
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