SOLUTION: An open box is formed from a rectangular piece of cardboard whose length is 8 cm more than its width by cutting squares whose sides are 2 cm in length from each corner and then fol

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Question 1058303: An open box is formed from a rectangular piece of cardboard whose length is 8 cm more than its width by cutting squares whose sides are 2 cm in length from each corner and then folding up the sides. Find the dimensions of the box if its volume is 690 cm^3.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
w Width and L length;
L=w%2B8

%28w-2%2A2%29%28L-2%2A2%29%2A2=690

%28w-4%29%28w%2B8-4%29%2A2=690

2%28w-4%29%28w%2B4%29=690

w%5E2-16=345

w%5E2=345%2B16

w%5E2=361
highlight%28w=19%29