There is a kind of uncovered fish tank, which is 30cm long, 20cm wide and 40cm high. When a fish is put in such a tank, the water surface rises from 18cm to 25cm. What is the volume of the fish?

There is a kind of uncovered fish tank, which is 30cm long, 20cm wide and 40cm high. When a fish is put in such a tank, the water surface rises from 18cm to 25cm. What is the volume of the fish?

30 × 20 × (25-18), = 600 × 7, = 4200 (CC). A: the volume of this fish is 4200 CC

A cuboid glass jar, 40cm long, 20cm wide and 30cm high (measured from the inside), has a water depth of 18cm
25cm, find the volume of the iron ball

The volume of the iron ball = the rising volume of the water tank
40*20*（25-18）=5600cm^3

A cuboid is 48CM long and 18cm wide. Cut it into three equal cuboids along the length. The surface area of the three cuboids is larger than that of the original cuboid
Add 576cm2, what's the volume of this cuboid?

Height 576 ／ 4 ／ 18 = 8 cm
Cuboid Volume 48 × 18 × 8 = 6912 cm3