Volume and solids
The volume of a prism is the base area times the height: for a box, width × depth × height. In a cylinder the base is a circle: π r² times the height. A litre is a 10 cm cube, that is, 1,000 cm³.
Where this sits
This is where the ladder starts: nothing is needed before it.
Exercises from this rung
Generated by the app, from easiest to hardest
How many vertices does a prism with a pentagonal base have?
- 10
- 15
- 5
- 7
Why The base has 5 sides. Edges: 5 on top, 5 below and 5 vertical, 15. Vertices: 5 on top and 5 below, 10. Faces: 5 sides and 2 bases, 7.
easierHow many edges does a prism with a triangular base have?
- 9
- 3
- 6
- 5
Why The base has 3 sides. Edges: 3 on top, 3 below and 3 vertical, 9. Vertices: 3 on top and 3 below, 6. Faces: 3 sides and 2 bases, 5.
in betweenA box measures 30 × 40 × 30 cm. How many litres does it hold?
Answer 36
Why 30 × 40 × 30 = 36,000 cm³, and every 1,000 cm³ is a litre: 36 l.
harder