Question

The width of a rectangle is half the length. The perimeter of the rectangle is 54 in. What is the length of the rectangle?

Answer 1

Width = 1/2 * Length

Perimeter = 2*Length + 2* Width

Answer 2

They give you the perimeter, sub wideth = 1/2*Length into the perimeter equation. Solve for the Length

Answer 3

Perimeter = 2*Length + 2*(1/2)*Length

perimeter is given, find length

Answer 4

lets call the width \(W\) so the length is \(2W\)
the perimeter is
\[W+W+2W+2W=6W\] which you know is \(54\) solve
\[6W=54\]