If you put a rectangular glass fish tank with a length of 4 decimeters and a height of 4 decimeters into a rectangular iron block with a length of 2 decimeters, a width of 4 decimeters and a height of 2 decimeters (1) If it's full of water, how many liters will it overflow? (2) If the original water depth 3. Will the water overflow? If so, how many liters will it overflow? (3) What is the maximum depth of water in order to keep the water from overflowing?

If you put a rectangular glass fish tank with a length of 4 decimeters and a height of 4 decimeters into a rectangular iron block with a length of 2 decimeters, a width of 4 decimeters and a height of 2 decimeters (1) If it's full of water, how many liters will it overflow? (2) If the original water depth 3. Will the water overflow? If so, how many liters will it overflow? (3) What is the maximum depth of water in order to keep the water from overflowing?

one
The volume of spilled water is equal to the volume of iron block
2 × 4 × 2 = 16 cubic decimeters = 16 liters
two
Original volume of water: 3.5 × 4 × 5 = 70 liters
Volume of fish tank: 4 × 5 × 4 = 80 liters
70 + 16 = 86 > 80, so it will overflow
Overflow: 86-80 = 6 liters
three
If there is no overflow, the maximum volume of water is 80-16 = 64 liters
64 / (4 * 5) = 3.2 decimeters
That is, the maximum depth of water is 3.2 decimeters

The cuboid fish tank measures 6 decimeters in length, 4 decimeters in width and 5 decimeters in height. The original water is 4 / 5 of the capacity of the fish tank. Now it is necessary to increase the water to 5 / 6 of the capacity of the fish tank
How many kilos of water do you add

The volume of fish tank is 6 × 4 × 5 = 120 cubic decimeter
Volume of original water = 120 × 4 / 5 = 96 cubic decimeter
5 / 6 of fish tank volume = 120 × 5 / 6 = 100 cubic decimeter
Volume of water to be added = 100-96 = 4 cubic decimeters = 4 liters
Weight of water to be added = 4 × 1 = 4 kg

Lingling's family has a cuboid fish tank, 8 decimeters long, 4 decimeters wide and 6 decimeters high. There used to be some water in the tank, which was put into 4 meters
Fangfang's family has a cuboid fish tank, 8 decimeters long, 4 decimeters wide and 6 decimeters high. There used to be some water in the tank. After putting four decorative colored balls of the same size, the water rose by 5 cm. How many cubic centimeters is the volume of each decorative ball?

80*40*5/4=4000m³