The figure shows a rectangular glass tank partly filled with 7-cm cubes. After adding 2 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 + 2
= 14
Extra cubes to fill
= 24 - 14
= 10
(b)
Volume of one cube
= 7 x 7 x 7
= 343 cm
3 Volume of the tank
= 24 x 343
= 8232 cm
3 Answer(s): (a) 10; (b) 8232 cm
3