Question

A rectangle has a perimeter, P, length, l, and width, w. Which of the following represents l in terms of P and w?

Answer 1

Answer: l = P/2 - w

Explanation:

Perimeter formula for rectangle :

P = 2( l + w )

We have to write l in terms of P and W.

P/2 = ( l + w)

P/2 - w = l

Now, flip the equation and you'll get :

l = P/2 - w