The formula for the perimeter of a rectangle is P=2(l+w). Solve for l.

Question

The formula for the perimeter of a rectangle is P=2(l+w).

Solve for l.



l=P2+w

l=p2−w

l=p−w2

l=2P−w

Answer 1

P = 2 * (L + w)

 

P/2 = L + w

 

P/2 - w = L

 

Here's a good test taking strategy:

  Let the length be 2 and the width be 1.

   Then the perimeter is P = 2 ( 2 +1) = 2 * 3 = 6

 Plug them into the choices, none of them work

Answer 2

P = 2(l + w)

P/2 = l + w

P/2 - w = l

 

Ooops, none of the choices!