**Problem : **
What is the area of a circle with diameter 8?

**Problem : **
If a central angle is 120
degrees, and the
radius is 3, what is the area of the
sector defined
by the intersection of the angle and the
circle?

**Problem : **
What is the area of the shaded region below?

**Problem : **
If the radius of circle A is twice that of circle B, how many times greater is
the area of
circle A than circle B?

**Problem : **
What is the area of the shaded region?

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