asked 140k views
4 votes
Liang is ordering new tires for his car. The tires he has have a circumference of 28π inches and a wheel rim with a circumference of 18π inches. How much larger is the radius of the tire than the radius of the wheel?

10 inches
5 inches
20 inches

asked
User Muksie
by
7.4k points

1 Answer

2 votes

Answer:

5 inches

Explanation:

circumference = pi ×diameter

radius = half diameter

therefore radius = circumference / pi / 2

radius of tire = 28/2 = 14

radius of rim = 18/2 = 9

difference = 14-9= 5 inches

answered
User Dariusc
by
7.5k points
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