Question

a large office desk has an area of 42ft^2. if the width is 3.5 feet , write an equation to represent this area

Answer 1

3.5x=42

x represents the length, since the formula to find area of a rectangle is width times length.

Answer 2

`A=3.5\cdot{x}`

Explanation:

Area is defined as width mutiplied by length. We assume the desk is rectangle. The following equation represents the area of the desk:

`A=3.5\cdot{x}`

A is the area and x is the length. We can therefore determine the length:

`x=A/3.5=42/3.5=12`

The length is 12 ft