   Chapter 8.4, Problem 7E Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

Find the exact lengths of the radius and the diameter of a circle whose area is: a) 25π in2 b) 2.25π cm2

To determine

a)

To Find:

The lengths of the radius and the diameter of the circle whose area is 25π in2.

Explanation

It is given that the area of the circle is 25π in2.

The area of the circle is A=πr2.

Therefore, 25π=πr2.

Now it becomes, r2=25

To determine

b)

To Find:

The lengths of the radius and the diameter of the circle whose area is 2.25π cm2.

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