Question

A circular archery target has a 24-in. diameter. the outer ring is blue. the inner circle is pink with a 6-in. diameter. find the area of the blue outer ring

Answer 1

the answer is B

Explanation:

i took the test and got a :)

Answer 2

The area of the blue outer ring is given by the area of the entire circular archery less the area of the inner pink circle.

The area of a circle is given by


`Area=\pi r^2`, where
`r= (d)/(2)`, r is the radius, d is the diameter.

Therefore, the area of the outer blue ring is given by:


`Area=\pi\left( (24)/(2) \right)^2-\pi\left( (6)/(2) \right)^2 \\ \\ =\pi(12^2-3^2)=\pi(144-9) \\ \\ =135\pi\ in^2`