SOLUTION: Please help me solve this: The perimeter of a rectangle is 10 ft. The width is 3ft less than the length. What is the area?

Question 682550: Please help me solve this: The perimeter of a rectangle is 10 ft. The width is 3ft less than the length. What is the area?
Found 2 solutions by ReadingBoosters, josmiceli:
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
p = 10 = 2l + 2w
w = l - 3
...
10 = 2l + 2(l-3)
10 = 2l + 2l - 6
10 = 4l - 6
16 = 4l
ft
w = 4 - 3 = ft
Therefore a = l*w = 4*1 =
.....................
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Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

The formula for perimeter is

and, by substitution:

and, since

The area is:

ft2

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