A square piece of card has a square of side 2cm cut out from each of its corners. The remaining card is then folded along the dotted lines shown to form an open box whose total internal surface area is 180 cm2. What is the volume of the open box in cm3?
Select one option, then click Submit.
100
128
162
180
200
Select an option, then submit.
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Intermediate Mathematical Challenge 2011 (2011)
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