Free Version
Moderate

# Tangent Circle Area

ACTMAT-6EKYVO

In the figure below circles O and B are internally tangent at A.

If $AB = 12$ cm, what is the area of the region inside circle B, but outside circle O, in square centimeters?

A

$36 \pi$

B

$72 \pi$

C

$108 \pi$

D

$144 \pi$

E

$160 \pi$