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multiply inches by 25.4 = mm
divide mm by 25.4 = inches
There are 1200 inches in 100 feet. 100 feet x 12 inches/1 foot = 1200 inches 1 foot = 12 inches
1 yard is 36 inches. So to get inches multiply yards by 36
234,432 inches.
1 mile = 63,360 inches.