## anonymous 5 years ago THE CIRCUMFERENCE OF A CIRCLE IS 13π. WHAT IS THE RATIO OF ITS CIRCUMFERENCE TO ITS DIAMETER?

1. nowhereman

That doesn't depend on the circumference. You should know the formula that gives you the circumference from the radius/diameter otherwise look it up.

2. anonymous

We all know that the formula for the circumference is as follows:$C = 2\pi R$ and the relationship between the diameter and radius is the following: $R = D/2$ Now write down the given and these formulas on paper, and give it a -one-more-time of thought ^_^ you can do it!