# To express: the given quantity in terms of the indicated variable.

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 1.6, Problem 13E
To determine

## To express: the given quantity in terms of the indicated variable.

Expert Solution

A=3w2ft2 .

### Explanation of Solution

Given:

The given quantity is “the area of rectangle that is three times as long as it is wide.

w is the width of the rectangle (in feet).

Concept used:

Area of the rectangle is the product of its lengthland widthw is given by A=lw .

Calculation:

According to question,length is three times as long as its width.

Therefore, l=3w

Thus, area of the rectangle is A=(3w)(w)=3w2ft2 .

Hence,area of the rectangle is A=3w2ft2 .

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