Afoot is 12 inches long. if an inch is about 2.54 centimeters long, how many centimeters are in a foot?

This is a question that needs understanding. The calculation part is comparatively easy. We should first concentrate and write down all the important information's that are given in the question.
1 foot = 12 inches
1 inch = 2.54 centimeters
The thing that needs to be determined is
1 foot = ? centimeters
Now
1 foot = 12 inches
           = (12 * 2.54) centimeters
           = 30.48 centimeters
So from the above deduction we can clearly see that 1 foot is equal to 30.48 centimeters. I hope the procedure is simple enough for you to understand.