A square piece of cardboard is formed into a box by cutting 10-centimeter squares from each of the four corners and then folding up the sides, as shown in the figure below. If the volume V of the box is to be 64,000 cm3, what size square piece of cardboard is needed? Recall that V = LWH.

length:
width:

Question

A square piece of cardboard is formed into a box by cutting 10-centimeter squares from each of the four corners and then folding up the sides, as shown in the figure below. If the volume V of the box is to be 64,000 cm3, what size square piece of cardboard is needed? Recall that V = LWH.

length:
width:

anonymous · Answer

I got 40 and 40. but it is incorrect

anonymous · Answer

yes.

danjs · Answer

an even amount is cut off the sides, so you get 

L - 20 for the remaining side (a dimension of the box)

anonymous · Answer

so if i got 40 for my length, its the width will be 20?
but i thought that because the square was equal on every side, all sides would be 40.

danjs · Answer

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