Question

The area of a circle is $\pi a^2$, then the radius of the circle is ____.

• A. d
• B. 2d
• C. d/2
• D. d²

Answer 1

The correct option is A

d

Area of a circle = $\pi (\text{radius}{)}^2$

Given is $\pi (\text{radius}{)}^2=\pi a^2$

Radius = a