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  • 03-05-2019
  • Mathematics
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mountain bike tire completes 20 revolutions and travels 136 feet. Rounded to the nearest inch, what is the diameter of the bike’s tire?

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prosborough198p2ub41
prosborough198p2ub41 prosborough198p2ub41
  • 03-05-2019

Answer: 26in

s=r*theta

r=s/theta

d=r*2

136ft=r*40pi

r=136/40pi=1.082ft

d=1.082*2=2.1645ft*(12in/1ft)=25.97in

Rounded to nearest in is 26in diameter

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