A tire impression left in the mud at a crime scene was 8.7 inches wide. How many centimeters is that?

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A tire impression left in the mud at a crime scene was 8.7 inches wide. How many centimeters is that?

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Answer 1 · 2014-08-24T05:43:19

The answer is $22.098$ $22.098$ $c m$ $cm$ .

Use the multiply by 1 method to ensure you have the correct ratio:

$8.7 I n c h \cdot \frac{2.54 c m}{1 I n c h} = 22.098$ $8.7 Inch *(2.54 cm)/(1 Inch)=22.098$ $c m$ $cm$

We have the inches cancelling out and $c m$ $cm$ remaining in the numerator, so the units are correct.

This is multiplying by 1 because we are multiplying by 2 things that are equal, that is, $2.54$ $2.54$ $c m = 1$ $cm=1$ inch. You need to put the units that you want into the numerator and the units you want to cancel out in the denominator.

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A tire impression left in the mud at a crime scene was 8.7 inches wide. How many centimeters is that?

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