Barrons AP Calculus

(A)

(B)

(C)

(D)

(E)

18.

(A)

(B)

(C)

(D)

(E)

19.

(A)

(B)

(C)

(D)

3   :   4

5   :   4

4   :   3

3   :   1

2   :   1

VOLUME

In Questions 18–24 the region whose boundaries are given is rotated about the
line indicated. Choose the alternative that gives the volume of the solid
generated.

y   =   x^2 ,   x   =   2,  and y   =   0;  about   the x-axis.

8π

y   =   x^2 ,   x   =   2,  and y   =   0;  about   the y-axis.

4π

8π