In the diagram, each of the two circles has center O. Also, OP:PQ=1:2. If the radius of the larger circle is 9, what is the area of the shaded region?
Answer Choices
A. 12\pi
B. 36\pi
C. 54\pi
D. 72\pi
E. 81\pi
In the diagram, each of the two circles has center O. Also, OP:PQ=1:2. If the radius of the larger circle is 9, what is the area of the shaded region?
Answer Choices
A. 12\pi
B. 36\pi
C. 54\pi
D. 72\pi
E. 81\pi