Question

Solve the formula A = lw for l.

Answer 1

The required formula is
`l=(A)/(w)`.

Explanation:

The given formula is

`A=lw`

Where, A is the area of a rectangle, l is length of the rectangle and w is the width of the rectangle.

To find the formula for l, we have to isolate the variable l.

Divide both sides by w.

`(A)/(w)=(lw)/(w)`

`(A)/(w)=l`

Therefore the required formula is
`l=(A)/(w)`.

Answer 2

To solve A =lw for l it means you want l on one side of the equals and anything not l on the other side. How are l and w put together? They are multiplied. We undo that multiplying with dividing.

A = l * w

A / w = l to divide both sides by w.

Thus l = A / w.