Question

A bowling ball has a diameter of 8.5 inches. If it is rolled down a 60-foot bowling lane, how many complete revolutions will it make? Round to the nearest tenth.

Worth 25 points!!

Answer 1

27 revolutions

Explanation:

Things to remember :

• One revolution = distance of circumference covered
• circumference = 2πr
• diameter = 2 x radius

Solving

• One revolution = 2 x π x d/2 = πd
• One revolution = 3.14 x 8.5
• One revolution = 26.69 inches
• No. of revolutions = Distance / one revolution
• No. of revolutions = 60 x 12 / 26.69
• No. of revolutions = 720 / 26.69
• No. of revolutions = 27 revolutions