Question

5. A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume of 320pi cubic feet. What is the diameter, in feet, of the water tank? ​

Answer 1

Answer:

8 ft.

Step-by-step explanation:

V = Bh        B = area of the base           h = height

The base is a circle, so $B = \pi r^{2}$

320π = $\pi r^{2} (20) = 20\pi r^{2}$

$r^{2} = \frac{320\pi }{20\pi } = 16$

r = 4

d = 8 ft.