a steam roller, whose wheel has a diameter of 2 feet, has just completed a pass over a driveway that is 30 feet in length. how many rotations of the roller were requiered

Question

a steam roller, whose wheel has a diameter of 2 feet, has just completed a pass over a driveway that is 30 feet in length. how many rotations of the roller were requiered

Answer 1

Circumference of the roller = C=pi(d) = 2pi

30/C = 30/2pi = 15/pi = about 15/(3.141593) times

= about 4.7746

= a little over 4 3/4 times or almost 5 times