Question

A circle with a circumference 20 has an arc with a 72, degrees central angle.
What is the length of the arc?

Answer 1

Answer:

Here is your answer

Step-by-step explanation:

The length of an arc is proportional to the ratio of the central angle of the arc to the total degre measure of a circle, 360 degrees. So the ratio you need is 72/360, which simplifies to 1/5. Now multiply the circumference of the circle by that ratio to find the arc length: 20 x 1/5 = 4.

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