A square piece of tin of side 18 cm is used to make an open box by cutting a square of side 4 cm from each corner and folding up the flaps to form a box. What will be the volume of the box?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 400 cm3
Cutting a 4 cm square from each corner takes 4 cm off both ends of every side; the middle square becomes the base and the flaps, folded up, become the sides, so the height is 4 cm.
Side of the base: \(18-2\times4=10\) cm
Volume \(=\) length \(\times\) breadth \(\times\) height \(=10\times10\times4=400\) cm3