A cuboid glass jar is 15 cm long, 12 cm wide and 10 cm high. The water depth inside is 8.5 cm, and then a cube block with 8 cm edge length is put into the water

A cuboid glass jar is 15 cm long, 12 cm wide and 10 cm high. The water depth inside is 8.5 cm, and then a cube block with 8 cm edge length is put into the water

15 * 12 * 8.5 = 1530 CC 8 * 8 * 8 = 512 CC 15 * 12 * 10 = 1800 CC 1530 + 512 = 1842 CC 1842-1800 = 42 CC = 42 ml

2. If a cuboid wood block with a length of 15cm, a width of 10cm and a height of 5cm is divided into three pieces, how many square centimeters does the surface area of the block increase?
Such as=
For example, how many square centimeters has the surface area increased after a cuboid wood block with a length of 15cm, a width of 10cm and a height of 5cm is divided into three pieces?

200 or 350 or 600
1) Cut along height
5×10×4=200
2) Cut along the length
15×5×4=300
3) Cut along width
10×15×4=600

How much is the maximum increase of surface area after cutting a rectangular wood block 20cm long, 15cm wide and 5cm high into two identical cuboids
centimeter

After cutting, the two surfaces cut are the increased surface area. In the above question, there are three kinds of cuboids that can cut two identical cuboids, that is, the length, width and height are cut in half, and the increased areas are: 20 * 15 * 2 = 600, 20 * 5 * 2 = 200, 15 * 5 * 2 = 150, there is no doubt that the maximum increased surface area is 600