Maths question

Ask yourself; what do I know?
Then ask yourself; what do I want to know?
Do you know enough to answer the second question?
Then make and execute a plan to answer the second question.
Check your answer.

Hint-What is the volume of the metal available and what is the volume of the 4cm cubes.

Rap

..and don't assume that there is no remainder.

How so?

Correct...no remainder in this case.

by my calculations 450