Question

What is the weight of a bowling ball with a 5 in. radius if we know that one cubic inch weighs 1/100th of a pound?

A. 6.54 lb.
B. 5.24 lb.
C. 9.86 lb.
D. 10.99 lb

Answer 1

The correct answer is - B. 5.24 lb.

Step-by-step explanation:

Given is a bowling ball, so it is a sphere.

The radius is given as = 5 inches

Volume of the sphere =
`(4)/(3) \pi r^(3)`

Putting r=5 and pi = 3.142 in the above formula, we get

volume = 523.66 cubic inches

Also given is - one cubic inch weighs 1/100th of a pound

So, 523.66 cubic inches will weigh =
`(523.66)/(100)=5.2366`

Hence rounding this off we get the weight of the bowling ball as 5.24 lb.