In the diagram, the center of the circle is O. The area of the shaded region is 20\% of the area of the circle. The value of x is
Answer Choices
A. 18
B. 45
C. 60
D. 72
E. 90
In the diagram, the center of the circle is O. The area of the shaded region is 20\% of the area of the circle. The value of x is
Answer Choices
A. 18
B. 45
C. 60
D. 72
E. 90