The answer for this question is 4.
This type of parabola opens either to the left or to the right. The negative makes it open to the left.
Answer:
Step-by-step explanation:
The volume for a sphere is
. Our radius is 21 inches, so
and
. Multiplying straight across the top, using the fact that 3.14 is pi:
and divide to get that
V = 38772.72 in^3