Question

Area between two concentric circles

Answer 1

Answer: 215π

Explanation:

If you think of the entire thing as two circles, it makes the problem a lot easier. If we were to find the area of the white "circle" and subtract it from the blue "circle", we would get the area of the ring. First, use the outer radius to find the area of this circle:

`Area=\pi r^2`

`Area=\pi (24)^2=576\pi`

Now find the area of the inner circle:

`Area=\pi r^2`

`Area=\pi (19)^2=361\pi`

Subtract the area of the inner circle from the area of the outer circle:

`576\pi -361\pi =215\pi`