Answer:
Step-by-step explanation:
The volume of a cylinder can be solved by finding the Surface area of its base, and multiplying it by the height.
Surface area is pi r^2
1. pi 7^2 * 15 = 2309.07
2. pi 8^2 * 20 = 4021.24
3. pi 5^2 * 14 = 1099.56
4. pi 15^2 * 50 = 35342.92