The figure shows a rectangular glass tank partly filled with 18-cm cubes. After adding 4 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 + 4
= 16
Extra cubes to fill
= 24 - 16
= 8
(b)
Volume of one cube
= 18 x 18 x 18
= 5832 cm
3 Volume of the tank
= 24 x 5832
= 139968 cm
3 Answer(s): (a) 8; (b) 139968 cm
3