GMAT数学求解--prep数学破解版第93题

In the figureabove, a square is inscribed in a circle. If the area of the square region is 16, what is the area of the circularregion?

(A)  2π

(B)  4π

(C)  6π

(D)  12π

(E)  16π

答案是C 求详解