   Chapter A.2, Problem 20E 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

In Exercises 17 to 20, find the value of the variable named in each formula. Leave π in the answers for Exercises 19 and 20. S ,  if  S = 4 π r 2  and  r = 2

To determine

To find:

The value of S.

Explanation

Calculation:

Solving an equation means finding the values of the variable that make the equation true when the variable is replaced by those values. These values are known as solutions for the equation.

Given:

Formula: S=4πr2

Substitute r=2 in the given formula, we get

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