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Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

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BuyFindarrow_forward

Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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Assuming that a 90° arc has an exact length 4π in., find the length of the radius of the circle.

To determine

To Find:

The length of the radius of the circle.

Explanation

Given:

A 90° arc has length of 4π in.

Calculation:

We know that a circle is made up of four 90° arcs.

Therefore, the circumference of the circle can be obtained by multiplying the arc length by 4.

The circumference of the circle is 44π in.

(i.e.,) 16π in.

The circumference of the circle is C=πd

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