Question

Match the following parts of the circle with their respective areas.

• A. $\pi r^2$
• B. $\frac{1}{4}\pi r^2$
• C. $\frac{1}{2}\pi r^2$

Answer 1

Area of the full circle $=\pi r^2$. (Since $\theta ={360}^{\circ }$)

Area of the semi-circle $=\frac{1}{2}\pi r^2$. (Since $\theta ={180}^{\circ }$)

Area of the quarter circle $=\frac{1}{4}\pi r^2$. (Since $\theta ={90}^{\circ }$)