Question

Find the area of a quadrant of a circle whose radius is $14$ cm.

Answer 1

Given the radius of the circle is $14$ cm.

Then the area of the circle $=\pi r^2=\frac{22}{7}\times (14{)}^2=\frac{22}{7}\times 4\times 7^2=4\times 154$ cm${}^2$.

Then the area of a quadrant of the circle is $\frac{4\times 154}{4}=154$ cm${}^2$.