SOLUTION: The perimeter of a rectangle is 160 m, and its area is 700 m2. Find its dimensions.

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Question 1074542: The perimeter of a rectangle is 160 m, and its area is 700 m2. Find its dimensions.
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
2L%2B2w=160
L%2Bw=80
L=80-w


wL=700
w%2880-w%29=700
80w-w%5E2=700
-w%5E2%2B80w-700=0
w%5E2-80w%2B700=0
%28w-10%29%28w-70%29=0

Dimensions, 10 and 70