The dimensions of a brick is 30 cm × 10 cm × 5 cm. The volume of 10 such bricks will be ___ cm3.
The dimensions of a brick is 30 cm × 20 cm × 10.5 cm. The volume of the brick is ___ cm3.
If the dimensions of a brick is 20 cm×10 cm×5 cm, then the volume of two such bricks will be ____ cm3.