49 .
Figure 8
In the right circular cylinder shown in Figure 8, points E and F are the
centers of the bases, and segment AB is the diameter of one of the
bases. What is the volume of the cylinder, to the nearest integer, if AE
= 10 and m∠AEF = 30°?
(A) 393
(B) 680
(C) 785
(D) 2,721
(E) 3,142
50 .
Figure 9