SOLUTION: Can you help me with this? The length of a rectangle is 3ft longer then its width. if the perimeter of the triangle is 34 feet then what is the area?

Click here to see ALL problems on Rectangles

Question 866446: Can you help me with this?
The length of a rectangle is 3ft longer then its width. if the perimeter of the triangle is 34 feet then what is the area?
Found 2 solutions by ewatrrr, MathLover1:
Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website!

Hi,

P = 2L + 2w = 34ft
or L + w = 17
(w+3)+w = 17
2w = 14
w = 7ft and L = 10ft
A = Lw = (10ft)(7ft) = 70ft^2

Answer by MathLover1(20850) (Show Source):
You can put this solution on YOUR website!
let the length of a rectangle be
let the width of a rectangle be
by definition:
the perimeter is and the area is
given: the length of a rectangle is longer then its width => ......eq.1
if the perimeter of the triangle is then we have:
...substitute and
...solve for

now find

......eq.1

finally, you can find the area:
...............plug in and