SOLUTION: Please help me solve this: The length of a rectangle is 6 cm more than the width. The perimeter is 156 cm. Find the length of the rectangle.

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Please help me solve this: The length of a rectangle is 6 cm more than the width. The perimeter is 156 cm. Find the length of the rectangle.       Log On


   

Question 312702: Please help me solve this:
The length of a rectangle is 6 cm more than the width. The perimeter is 156 cm. Find the length of the rectangle.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The perimeter of a rectangle is,
P=2%2A%28L%2BW%29=156
L%2BW=78
The length is 6 cm longer than the width,
L=W%2B6
Substitute and solve,
%28W%2B6%29%2BW=78
2W=72
highlight%28W=36%29
Then from above,
L=W%2B6
highlight%28L=42%29