Question

Area of a rectangle and the area of a circle are equal. If dimensions of the rectangle are $14cm\times 11cm$, then radius of the circle is :___ .

Answer 1

Area of the rectangle $=14cm\times 11cm=154c{m}^2$

Now , Area of circle $=154c{m}^2=\pi r^2$

$\therefore r^2=\frac{154}{\pi }=49$ (take $\pi as\frac{22}{7})$

$\Rightarrow r=7cm$