What is the maximum amount a cyliner contains if the height is 7.5", diameter 5 foot?

Question

Radius= / diameter, you may use 3.14 to approximate pi

Answer 1

V = πr²h

Since the height is in inches and the diameter is in feet, you need to represent them in the same units.

1 foot = 12 inches

5 feet = 60 inches

radius = 30 inches

V = π(30)²(7.5)

V = π(900)(7.5)

V = 6750π

V ≈ 21,195 in³

Answer 2

V = πr²h

V = π(2.5)²(7.5)

 

Can you calculate?