SOLUTION: This is a simple algebra question: "Find the dimensions of a rectangle whose perimeter is 42 m and whose area is 104 m (squared)."

Question 250839: This is a simple algebra question: "Find the dimensions of a rectangle whose perimeter is 42 m and whose area is 104 m (squared)."
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
we need two formulas:

.
From our given information we have
(i)
(ii)
Solve equation (ii) for L.
(iii)
Substitute (iii) information into (i) to get
(iv)
or
(v)
Now multiply both sides by W to get

set this equal to 0 and factor.

W = 13, W = 8.
If W = 13m, then L = 8m.
If W = 8m, then L = 13m.

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