Question

How many cm in 1 mile? (conversion: 1 in.= 2.54cm)

Answer 1

Three different units..

Answer 2

1 in = 2.54 cm
1 ft = 12 inches
1 mi = 5280 ft

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You start with 1 mile, then you multiply it by the following fractions to convert

(5280 ft/1 mi)
(12 in/1 ft)
(2.54 cm/1 in)

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so you'll have this

(1 mi)*(5280 ft/1 mi)*(12 in/1 ft)*(2.54 cm/1 in)

and I'll let you finish