1. What is a prism?

A prism is a solid with a uniform cross-section. e.g. A cylinder is a prism. 
Its cross-section is a circle.

2. How is the volume of a prism calculated?

Find the area of the cross-section and multiply by its length.

3. What is the relationship between a millilitre and a cubic centimetre?

They are equivalent.

4. What is a litre?

Think of a litre as a cube of side 10 cm. 
This gives an volume of 10 × 10 × 10 = 1000cm