मराठी

Find the Area and Perimeter of the Following Semi-circle :

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प्रश्न

Find the area and perimeter of the following semi-circle :

Radius= 1.4 cm

बेरीज
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उत्तर

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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