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GB-27-02-001 · Prism volume

A prism has a triangular cross-section of base 20 cm and perpendicular height 3 cm. The prism is 8 cm long. Calculate its volume.

3D Shapes: Volume of a Prism Booklet p. 39 & p. 40
Method
1) Find area of triangular cross-section = ½ × base × height
2) Volume of prism = area of cross-section × length
Worked Example (GB-27-02-001)
1)
Cross-section area = 30 cm².
2)
240 cm³
Ans = 240 cm³