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
Set the formula for the circumference equal to
. Solve for the radius.