Answer
$A=lw$
Work Step by Step
Since the area $A$ of a rectangle is the product of its length $l$ and its width $w$, then we have
$$
A=lw
.$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.