A rectangular sheet of iron is 12 decimeters long and 9 decimeters wide. Cut a square with a side length of 2 decimeters from the four corners of the rectangle. Fold and weld the rest into a cuboid container without a cover. Calculate the volume of the cuboid container Another question: When water becomes ice, its volume increases by 1 / 11. When a bucket of water becomes ice, its volume is 0.6 cubic meters more than before. When it turns into water, what is the volume of the bucket of water? Ha ha, there is another calculation: 12.5 × 6.3 + 1.25 × 37 = answer = 125 The application question tile must be 100% right. There is a formula, oh, urgent, When water freezes, its volume will increase by 1 / 11. When a bucket of water freezes, its volume will be 0.6 cubic meters more than before. When it turns into water, what is the volume of this bucket of water? Answer = 6 or 6.6 answer "yes" or "no" tile to you, plus 20!

A rectangular sheet of iron is 12 decimeters long and 9 decimeters wide. Cut a square with a side length of 2 decimeters from the four corners of the rectangle. Fold and weld the rest into a cuboid container without a cover. Calculate the volume of the cuboid container Another question: When water becomes ice, its volume increases by 1 / 11. When a bucket of water becomes ice, its volume is 0.6 cubic meters more than before. When it turns into water, what is the volume of the bucket of water? Ha ha, there is another calculation: 12.5 × 6.3 + 1.25 × 37 = answer = 125 The application question tile must be 100% right. There is a formula, oh, urgent, When water freezes, its volume will increase by 1 / 11. When a bucket of water freezes, its volume will be 0.6 cubic meters more than before. When it turns into water, what is the volume of this bucket of water? Answer = 6 or 6.6 answer "yes" or "no" tile to you, plus 20!

Question 1: (12-2 × 2) × (9-2 × 2) × 2 = 80 cubic decimeter
Question 2: 0.6 △ 1 / 11-0.6 = 6 cubic meters
Question 3: 12.5 × 6.3 + 1.25 × 37 = 12.5 × 6.3 + 12.5 × 3.7 = 12.5 × (6.3 + 3.7) = 12.5 × 10 = 125

A cuboid iron sheet, 40 cm long and 35 cm wide, cut the cube with a side length of 5 cm from the four corners, and then make a box. The surface area of the box
How much is it? Help me!

The surface area of the box = the area of the rectangle - the area of four squares with five centimeters on each side
=40×35-5×5×4
=1400-100
=1300 square centimeters

A rectangular iron plate, 30 cm in length and 25 cm in width. As shown in the figure, cut the square with a side length of 5 cm from four corners, and then make a box. How many ml is the volume of this box?

Because the length of the box is 30-5 × 2 = 20 (CM), the width is 25-5 × 2 = 15 (CM), and the height is 5 cm, the volume of the box is: 20 × 15 × 5, = 300 × 5, = 1500 (CC), = 1500 (ML); a: the volume of the box is 1500 ml