SOLUTION: The height of a rectangular box is 2 times its width, and its length is 3in more than its width. The volume of the box is 130in3 find the width of the box

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Question 1024992: The height of a rectangular box is
2
times its width, and its length is
3in
more than its width. The volume of the box is
130in3
find the width of the box
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The height of a rectangular box is 2 times its width, and its length is
3in more than its width. The volume of the box is 130in3
find the width of the box
w = width
---
Vol = L*W*H
-----
Vol = w*2w*(w+3) = 130
2w^3 + 6w^2 = 130
w^3 + 3w^2 - 65 = 0
w is not an integer --> numerical solution.
--------
W =~ 3.323006