36 is the answer.
There are 12 inches in a foot,
so 3*12=36
3 feet equals 36 inches because 3x12=36.
How much is the unit rate?
Unit rate means rate for one of something. Describe this as a ratio with a denominator of 1. For example, if you ran 70 meters in 10 seconds, you ran an average of 7 meters per second. The ratio of both 70 yards in 10 seconds and 7 yards in 1 second is the rate, but 7 yards in 1 second is the unit rate. At the
unit rate, the denominator is always 1. Therefore, to find the unit rate, divide the denominator by the numerator so that the denominator is 1. For example, if you cover 50 km in 5.5 hours, the unit price will be 50 km / 5.5 hours = 9.09 km / hour.
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