Question

The area of the rectangle is 65.13sq m. The width is 3.9 meters what’s the length?

Answer 1

The area of a rectangle is equal to the product of its width and length, as stated in the formula:

`A=w*l`

If you know the width and the area of the rectangle, you can calculate its length. First, write the formula for the dimension you want to calculate, in this case, you have to write the formula for l.

To do so, you have to divide both sides of the equal sign by w:

`\begin{gathered} A=w*l \\ (A)/(w)=(w*l)/(w) \\ (A)/(w)=l \end{gathered}`

Now that you have written the formula for the length, you can proceed to calculate it.

You know that the area is A=65.13 m² and the width is w=3.9m, then:

`\begin{gathered} l=(A)/(w) \\ l=(65.13)/(3.9) \\ l=16.7m \end{gathered}`

The length of the rectangle is 16.7 meters.