Question

A circle has an arc of length 24n that is intercepted by a central angle of 80°.

What is the radius of the circle?
Enter your answer in the box.
units

Answer 1

I got radius= 54

arc/2pi r = degrees/360

then fill in what you know: 24pi/2pi r = 80/360

Now cross multiply and you get: 8640pi = 160pi r

Now divide both sides by 160pi and you get: 54= r