?

Free Version
Easy

# Related Rates in a Circle

SVCALC-EY8MX8

The radius of a circle increases at $2$ m/sec. At what rate is the area increasing when the diameter is $10$ m?

A

$200 \pi$ m$^2$/sec

B

$20 \pi$ m$^2$/sec

C

$4$ m$^2$/sec

D

$4 \pi$ m$^2$/sec