### Home > PC > Chapter 1 > Lesson 1.3.1 > Problem 1-104

1-104.

A trundle wheel (a wheel attached to the end of stick) is used to measure distance. As you walk with the wheel on the ground, it makes a click after each revolution.

If the wheel has a radius of one foot, what is the exact distance for one revolution?

What is the circumference of the wheel?

(radius) = circumference What would the radius need to be so that each revolution is equal to exactly

feet? Set the formula for the circumference equal to

. Solve for the radius.