Question

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

Answer 1

For a bowling ball:
V = 4/3 · r³ π
V = 4/3 · 5³ · 3.14 = 1570 * 3 = 523.33 in³
1 in³ = 1/100 = 0.01 pound
Weight = 523.33 · 0.01 = 5.2333 pounds