Answer:
16 pi cubic units
Step-by-step explanation:
Given that a region is bounded by

And the region is rotated about x axis.
We can find that here radius would be y value and height would be dx
So volume would be as follows:
If f(x) is rotated about x axis volume
= 
cubic units.
1 1/1 is the fraction, because ...........
Answer:
10) C or D
11) C
12) B
Step-by-step explanation: