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2 years ago

7

Many American cars feature speedometers that show kilometers per hour. If you are required to drive 500 miles, and you know that

one kilometer is approximately 5858 of a mile, how many kilometers would you cover in that journey

1 answer:

dezoksy [38]2 years ago

7 0

Around 804.672 kilometers.

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What is the approximate diameter of a tire that will make 775 complete rotations in one mile? (Note: there are 5280 feet

GalinKa [24]

Answer:

About 2.17 feet.

Step-by-step explanation:

Let <em>d</em> represent the diameter of the tire.

Then the circumference of the tire will be:

$C=d\pi$

So, the tire will travel dπ miles after one rotation.

After 775 rotations, the total miles traveled should be 5280 feet. Thus:

$775(d\pi)=5280$

Solve for <em>d:</em>

<em /> $\displaystyle d=\frac{5280}{775\pi}$ <em />

Approximate:

$d=2.1686...\approx2.17$

The circumference of the tire should be about 2.17 feet.

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