SOLUTION: An open box is made from a 30​-cm by 40​-cm piece of tin by cutting a square from each corner and folding up the edges. The area of the resulting base is 336 cm2. What is the l

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: An open box is made from a 30​-cm by 40​-cm piece of tin by cutting a square from each corner and folding up the edges. The area of the resulting base is 336 cm2. What is the l      Log On


   

Question 1147501: An open box is made from a 30​-cm by 40​-cm piece of tin by cutting a square from each corner and folding up the edges. The area of the resulting base is 336 cm2. What is the length of the sides of the​ squares?
Answer by josgarithmetic(39614) About Me  (Show Source):
You can put this solution on YOUR website!
Base length, 40-2x
Base width, 30-2x

%2840-2x%29%2830-2x%29=336
%2820-x%29%2815-x%29=84
%2812%29%287%29=84

system%2820-x=12%2C15-x=7%29
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