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Answer:
The size of the cardboard should be
Step-by-step explanation:
The diagram for this question is shown on the first uploaded image
The volume of the box is
The length and the Width of the card is
L = W = Z
From the question we are told that 7 in squares were cut from each corner
So the length and the width of the box would be
L = W = (Z - 7)
And the height would be H = 7 in
Mathematically the volume of the box can be represented as
So the Volume would be
Substituting values
=>
