Q. 164.0( 8 Votes )

In Fig. 3, APB an

Answer :

Let the radius of bigger semicircle, APB be R.

OA = OB = R
Diameter of smaller semicircle, AQO = Radius of the bigger semicircle, APB

Therefore, Radius of smaller semicircle, AQO = R/2

Perimeter of the figure = Circumference of APB + BO + Circumference of OQA

R = 7cm

Area of the shaded region = Area of bigger semicircle + Area of smaller semicircle


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