Area of the circle obtained in Question 4 is

36 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is

A wire is bent to form a square of side 22 cm. If the wire is rebent to form a circle, its radius is

Area of a rectangle and the area of a circle are equal. If the dimensions of the rectangle are 14cm × 11 cm, then radius of the circle is

Area of shaded portion in Fig. 9.15 is