Question

Find the area of a quadrant of a circle whose circumference is 88 cm.

Answer 1

Circumference of circle $=2\times \pi \times r=88cm$

Circumference of circle $=2\times \pi \times r=88cm$

$\pi \times r=44$

$r=\frac{44}{\pi }=44\times \frac{7}{22}=2\times 7=14$

Area of quadrant $=\frac{\pi r^2}{4}=\frac{\pi \times {14}^2}{4}=153c{m}^2$