3 years ago

A circle has an arc of length 24π that is intercepted by a central angle of 80°. What is the radius of the circle?

1 answer:

8 0

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

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