1. Paul is designing wheels for a concept car. The diameter of the wheel is 18 inches. Paul wants to make spokes in the wheel that run from the center of the wheel to the rim. In other words, each spoke is a radius of the wheel. How long are these spokes?

1 Answer

#d = 2r#

Explanation:

Therefore, if each spoke is the length of the radius of the wheel, then the length of each spoke would be half of the diameter, which will be 9 inches.

Do remember the key formulae of circles:
#d = 2r#
where #d# is the diameter and #r# is the radius.