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nasty-shy [4]
2 years ago
3

a mountain bike tire completes 20 revoultions and travels 136 feet. round to the nearest inch, what is the diameter of the bikes

tire? use 3.14 for pi
Mathematics
2 answers:
salantis [7]2 years ago
8 0
To the nearest inch, the diameter of the tire is 26 inches.

The bike traveled 136 feet in 20 revolutions.  First we want to convert this to inches.  

136 ft * 12 in/ft = 1632 inches.

Next we find how many inches it travels in 1 revolution:
1632/20 = 81.6 inches

The distance around the tire is called the circumference, and the formula for circumference is 
C=πd

Our circumference is 81.6 and π is 3.14:
81.6 = 3.14d

Divide both sides by 3.14:
81.6/3.14 = 3.14d/3.14
26 = d
LuckyWell [14K]2 years ago
7 0

Answer:

d=26

Step-by-step explanation:

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