The length of a rectangle is twice its width. If the perimeter of the rectangle is 42 in, find its length and width.

Question

asked Feb 10, 2023 120k views

1 Answer

Bhaumik Pandhi · Answer 1 · 2023-02-16T17:56:54+0000

Answer: Width = 7 inches, Length = 14 inches

Explanation:

Let the width be
. Then, the length is
.

Using the formula for the perimeter of a rectangle,

$2(w+2w)=42\\\\w+2w=21\\\\3w=21\\\\w=7\\\\\implies 2w=14$