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Convert 12 inches to millimeters (to the nearest tenth).

GirlsRbetteR  Jul 28, 2017

Best Answer 

 #1
avatar+1221 
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I'll be happy to do math that I am assigned! Yay!

 

To figure this out, we must know the base comparisons. This just requires memorization, unfortunately.

 

\(1in=0.0254m\)

 

I happen to know that this is the base comparison. However, I'll have to do 2 conversions. One for the appropriate number of inches and one for meters to millimeters. Here it goes!

 

\(\frac{1in}{0.0254m}=\frac{12in}{xm}\) This is a proportion. Solve by cross multiplying. 
\(x=12*0.0254=0.3048m\) Therefore, this shows that 12 inches is equivalent to 0.3048 meters. Now, we must convert to millimeters.
\(\frac{1000mm}{1m}=\frac{ymm}{0.3048m}\) Cross multiply a second time.
\(y=0.3048*1000=304.8mm\)  
   

 

Bam! Done! 12 inches = 304.8 millimeters!

TheXSquaredFactor  Jul 28, 2017
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1+0 Answers

 #1
avatar+1221 
+1
Best Answer

I'll be happy to do math that I am assigned! Yay!

 

To figure this out, we must know the base comparisons. This just requires memorization, unfortunately.

 

\(1in=0.0254m\)

 

I happen to know that this is the base comparison. However, I'll have to do 2 conversions. One for the appropriate number of inches and one for meters to millimeters. Here it goes!

 

\(\frac{1in}{0.0254m}=\frac{12in}{xm}\) This is a proportion. Solve by cross multiplying. 
\(x=12*0.0254=0.3048m\) Therefore, this shows that 12 inches is equivalent to 0.3048 meters. Now, we must convert to millimeters.
\(\frac{1000mm}{1m}=\frac{ymm}{0.3048m}\) Cross multiply a second time.
\(y=0.3048*1000=304.8mm\)  
   

 

Bam! Done! 12 inches = 304.8 millimeters!

TheXSquaredFactor  Jul 28, 2017

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