Question

A box with a square base and no top is to be made from a square piece of carboard by cutting 6 in. squares from each corner and folding up the sides. The box is to hold 15606 in3. How big a piece of cardboard is needed?

Answer 1

@Hero, can you help?

Answer 2

Hang on

Answer 3

So basically, we are given a square piece of cardboard:



Except 6 inch squares are cut from each corner:



Correct?