Question

The circumference of a circle is 65π. In terms of pi, what is the area of the circle?
A)
600 π
B)
936.5 π
C)
950.25 π
D)
1056.25 π

Answer 1

\[C = 2\pi r\] if we solve for \(r\), we get \(r=\dfrac{C}{2\pi}\)

Then we look at the area of a circle: \(A = \pi r^2\). All we have to do now is substitute what we have solved for \(r\)
\[A=\pi \left(\frac{C}{2\pi}\right)^2\]

Answer 2

ok im really rusty so i forget the steps