Q2 of 46 Page 61

Find the perimeter and area of semicircles whose radii are,

10.5 cm

We know, Perimeter of semicircle = πr + 2r


And,


Area of semicircle


Radius = 10.5 cm


Perimeter of semicircle = πr + 2r



= 54 cm




= 173.25 cm2


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