Q.

How many centimeters are 2 inches?

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a

2.7 cm   

b

5.8 cm   

c

8.3 cm   

d

5.29 cm 

answer is B.

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Detailed Solution

We are going to convert inches to centimeters so we will need the following relationship.
0.3937= 1cm
Divide both sides by 0.3937 to get the inch to centimetre conversion factor.
 1= 10.3937 cm
 1= 2.54 cm
The relationship between one unit of an inch and one centimetre is now clear. In order to convert 2 inches to centimetres, multiply both sides by 2.
 1 × 2= 2.54 × 2 cm
 2= 5.08 cm
 
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How many centimeters are 2 inches?