SOLUTION: The area of a rectangular building is 3,174 square meters. The perimeter is 230 meters. What are the dimensions of the building?

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Question 1194745: The area of a rectangular building is 3,174 square meters. The perimeter is 230 meters. What are the dimensions of the building?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%28L%2Bw=230%2F2%2CwL=3174%29

L=115-w
-
w%28115-w%29=3174
-w%5E2%2B115w-3174=0
w%5E2-115w%2B3174=0

fromherereviewuseofquadraticformulageneral_solution,usedhere,
discriminant_is %28-115%29%5E2-4%2A3174=529=23%5E2;
highlight_green%28w=%28115%2B-+23%29%2F2%29--------------and you can finish this.