Posted by Samantha on Sunday, October 25, 2009 at 8:37pm.
P=2l+2w
Solve for l.
Please show me how you got your answer so I will understand how to do these problems. Thank you.

Algebra1  Ms. Sue, Sunday, October 25, 2009 at 8:48pm
P=2l+2w
Perimeter = 2 * length + 2 * width
This is how you find the perimeter (distance around) a rectangle.
Suppose you want to put a border around a room. If the room is 15 feet long and 12 feet wide, then you'd figure the perimeter this way:
P = 2l + 2w
P = (2 * 15) + (2 * 12)
P = 30 + 24
P = 54
So  you'd need 54 feet of the border for the room. 
Algebra1  Samantha, Sunday, October 25, 2009 at 8:56pm
thanks!

Algebra1  Ms. Sue, Sunday, October 25, 2009 at 8:57pm
You're welcome.

Algebra1  Anonymous, Sunday, March 17, 2013 at 12:47pm
How many gallons of paint is needed to paint a wall whose dimensions are 11 feet by 19 feet with a 8 foot ceiling?