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A 30 cm square iron sheet, cut off the four corners, 3 cm square, make a box. What's the volume of the box and the bottom area How much is it? How much metal is used
Bottom area: (30-3 * 2) * (30-3 * 2) = 576 square centimeters
The volume of this box is 576 * 3 = 1728 cubic centimeters
How much iron sheet is used: 30 * 30-3 * 3 * 4 = 864 square centimeters
This is the first answer. I wish you progress!
A rectangular iron sheet, 40 cm in length and 30 cm in width, is cut off from four corners, and the square with a side length of 5 cm is made into a box. The volume of this iron box is
The length of this iron box is 40-5-5 = 30 cm
The width of this iron box is 30-5-5 = 20 cm
The height of this iron box is five centimeters
The volume of this iron box is 30 × 20 × 5 = 3000 cubic centimeters
A rectangular sheet of iron, 30 cm long and 20 cm wide, cut a square with a side length of 5 cm from the four corners of the sheet, and then make a rectangular box,
What's the volume of the box?
(30-5 × 2) × (20-5 × 2) × 5 = 1000 ml
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