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Mathematics 17 Online
OpenStudy (anonymous):

please help will give medal, fan, and testimonial!

OpenStudy (anonymous):

OpenStudy (anonymous):

i already did A just need help with B

OpenStudy (luffingsails):

Use the answer you got from A to help you solve B. A complete rotation of the tire, covers the distance you got in answer A. So, divide 5280 ft by the circumference to find out how many times it will rotate around.

OpenStudy (luffingsails):

@js7474

OpenStudy (anonymous):

????

OpenStudy (anonymous):

i dont know how to do that?

OpenStudy (luffingsails):

What was your answer for A?

OpenStudy (anonymous):

Formula: C=2πr C=2π2.5 C=2π2.5=15.71

OpenStudy (anonymous):

@luffingsails

OpenStudy (luffingsails):

Yes, C = 15.71 ft. Now divide 1 mile (5280 ft) by C. 5280 / 15.71 = # of tire rotations.

OpenStudy (anonymous):

?

OpenStudy (luffingsails):

Solving: The number of tire rotations is 336. 5280 ft / 15.71 ft = 336 rotations.

OpenStudy (anonymous):

thats the answer?

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