Solve Equation for word problem

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jbn

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Constructing a box with no top. An open box is formed by cutting squares from the corners of a regular piece of cardboard and folding up the flaps. What size corner squares should be cut to yield a box with a volume of 125 inches cubed?

The rectangle is 15 inches high and the square side is 12 inches.


The answers are .94 and 3.78 but I can't get those answers. Please help me. Thanks.
 
jbn said:
Constructing a box with no top. An open box is formed by cutting squares from the corners of a regular piece of cardboard and folding up the flaps. What size corner squares should be cut to yield a box with a volume of 125 inches cubed?

The rectangle is 15 inches high and the square side is 12 inches.


The answers are .94 and 3.78 but I can't get those answers. Please help me. Thanks.
Click to expand...

Please share with us your work/thoughts - how did you get to a different answer - so that we know where to begin to help you.
 
I don't know how to get those answers. They are listed as the answers to the problem in the back of the book. I would like to understand how they get those answers.
 
jbn said:
I don't know how to get those answers. They are listed as the answers to the problem in the back of the book. I would like to understand how they get those answers.
Click to expand...

Your textbook/classnotes did not show a problem like this?

To start:

Draw a sketch of a rectangle with sides 12 and 15.

Cut corners X by X squares.

Now if you fold along the dotted lines - You will get a open-top box
Code: 
                           _________________
                          |                 |
                          |                 |
                    ______|.................|_______
                   |                                |
                   |_______ ................._______|
                           |                |           
                           |                |       
                           |________________|

Then tell us about the size of the box you are going to get.
 
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