The figure shows a rectangular glass tank partly filled with 10-cm cubes. After adding 3 extra cubes,
- How many more cubes are needed to the tank completely?
- What is the volume of glass tank?
(a)
Total number of cubes that can fill the tank
= 4 x 2 x 3
= 24
Number of cubes in the tank after adding extra cubes
= 12 + 3
= 15
Extra cubes to fill
= 24 - 15
= 9
(b)
Volume of one cube
= 10 x 10 x 10
= 1000 cm
3 Volume of the tank
= 24 x 1000
= 24000 cm
3 Answer(s): (a) 9; (b) 24000 cm
3