Question

A giraffe can run about 14 meters per second. Find it's speed in miles per hour. ( 1 mi = 5280 ft; 1 m = 3.28 )

Answer 1

`1m=3.28ft\\\\1mi=5280ft\to1ft=(1)/(5280)mi\\\\1m=3.28*(1)/(5280)\ mi=(3.28)/(5280)\ mi=(328)/(528000)\ mi=(41)/(66000)\ mi\\\\1h=3600s\to1s=(1)/(3600)h\\-------------------------\\14\ m/s=(14*(41)/(66000):(1)/(3600))\ mph=((574)/(66000)*3600)\ mph\\\\=((574)/(55)*3)\ mph=(1722)/(55)\ mph\approx31\ mph`