The wheels of a car have radius 10 in. and are rotating at 800 rpm. Find the speed of the car in mi/h.

Cdortch Oct 28, 2020

#1**+1 **

Circumference of wheel/tire in FEET = 2 * r * pi / 12

now the tire travels 800 of these distances PER MINUTE

800 * 2 * r*pi / 12 multiply this by 60 minutes in an hour to get feet per hour

60 * 800* 2*r*pi / 12 divide this number by 5280 feet in a mile to get miles per hour

ElectricPavlov Oct 28, 2020