Bunuel wrote:
What is the area of the shaded region if the center of the larger circle lies on the small circle, as shown?
(1) The diameter of the smaller circle is 5.
(2) The circumference of the larger circle is 10 π.
Area of shaded region = area of big circle - area of small circle
The diameter of the small circle is half that of the bigger one.
(1) Diameter of small circle is 5 > area of both circles can be calculated [SUFFICIENT]
(2) Circumference of the larger circle is is 10 π > Radii of both circles can be calculated and then areas too [SUFFICIENT]
Answer is D
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