# Thread: How do you work out the area of a circle?

1. ## How do you work out the area of a circle?

how do i work out the area of a circle if the distance from the centre of the circle to the edge is 12m?

2. Originally Posted by barnes09
how do i work out the area of a circle if the distance from the centre of the circle to the edge is 12m?

Hi barnes09,

First, we must have the formula for the area of a circle.

$A=\pi r^2$, where r is the radius (distance from center to edge)

Next, substitute your given value for the radius (12) into the formula and solve for A.

$A=\pi (12)^2$

$A=144 \pi$

$A \approx 452.4 \ \ m^2$