SOLUTION: How many revolutions will a car wheel of diameter 22 in. make as the car travels a distance of one mile? (Round your answer to the nearest whole number.)
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Question 1206393: How many revolutions will a car wheel of diameter 22 in. make as the car travels a distance of one mile? (Round your answer to the nearest whole number.) Found 3 solutions by Theo, ikleyn, MathLover1:Answer by Theo(13342) (Show Source):
You can put this solution on YOUR website! the diameter of the wheel is 22 inches.
the radius of the wheel is half that = 11 inches.
the circumference of the wheel is equal to 2 * pi * 11 = 22 * pi.
1 mile is 5280 feet * 12 = 63360 inches.
divide that by 22 * pi and you get 63360 / (22 * pi) = 916.7324722 revolutions of the wheel in 1 mile.
that becomes 917 revolutions when rounded to the nearest integer.
that's your solution.
You can put this solution on YOUR website! .
How many revolutions will a car wheel of diameter 22 in. make as the car travels a distance
of one mile? (Round your answer to the nearest whole number.)
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One mile = 63360 inches.
Each revolution of the car wheel moves the car forward by the circumference, which is
= = 69.1150383 inches.
The number of revolutions needed is = 916.7.
Round it to the nearest integer and get the
ANSWER. 917 revolutions (rounded).
Solved.
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In problems, where the diameter "d" of a circle is given, use the formula
C =
for the circumference.
Do not use it in the form C = , since then you must make
excessive calculation r = d/2, demonstrating your interior mental instability.
Follow the general rule : NO excessive unnecessary calculations.
Remember that they are a source of potential errors, distract your attention and take away precious time.
find the circumference of the car wheel
if diameter
the circumference is
a distance of mile is inches
revolutions
round to the nearest whole number: revolutions
