Chapter 8.4, Problem 8E

### Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Chapter
Section

### Elementary Geometry For College St...

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

# Find the exact length of the radius and the exact circumference of a circle whose area is: a) 36π m2 b) 6.25π ft2

To determine

a)

To Find:

The length of the radius and the circumference of the circle whose area is 36π m2.

Explanation

It is given that the area of the circle is 36Ï€ m2.

The area of the circle is A=Ï€r2.

Therefore, 36Ï€=Ï€r2.

Now it becomes, r2=36</

To determine

b)

To Find:

The length of the radius and the circumference of the circle whose area is 6.25 ft2.

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