   Chapter 8.4, Problem 13E ### Elementary Geometry for College St...

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

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
12 views

# A metal circular disk whose area is 143 cm2 is used as a knockout on an electrical service in a factory. Use your calculator value of π to find the length of the radius of the disk to the nearest tenth of a cm.

To determine

To Find:

The length of the radius of circular metal disk.

Explanation

Given:

The area of the circle is 143 cm2.

Formula:

The area of a circle is A=πr2.

Calculation:

The calculator value of π is 3.142857.

Then the area of a circle is,

143=3.142857r2

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