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Question

A rectangular piece of cardboard is 40 in width and 50 in length. Squares 5 on a side are cut out of each corner, and the remaining flaps are bent up to form an open box. The number of cubic inches in the box is


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Solution

The height of the rectangular piece after being bent is 5 in.
The new length of the rectangular piece =length of the rectangle piece-2×Squares 5 on a side are cut out of each corner

The new length of the rectangular piece =50-2×5

The new length of the rectangular piece =40 unit

The new width of the rectangular =width of the rectangle piece-2×Squares 5 on a side are cut out of each corner
The new width of the rectangular piece = 40-2×5

The new width of the rectangular piece =30 unit
Volume = 40×30×5

Therefore, volume=6000 cubic units.


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