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Topic summary · IGCSE handout

Volume summary

Volume measures space in 3D: prisms (including cylinders) use area of cross-section × length.

Files: 12_volume_handout.pdf · 12_volume_handout_answers.pdf · free public downloads · diagrams in the PDFs

Key learning points

  • Cuboid lwhlwh; prism Across×lengthA_{\text{cross}}\times\text{length}; cylinder πr2h\pi r^2 h.
  • Composite solids: add/subtract known volumes.
  • Capacity in litres: 1000 cm3=1 l1000\,\mathrm{cm}^3=1\,\mathrm{l}.

Worked example 1 — Cuboid

Cuboid 5×3×25\times3\times2. Volume?

Working

V=30V=30

Length × width × height.

Worked example 2 — Cylinder

Radius 33, height 1010. Volume in terms of π\pi?

Working

V=πr2h=90πV=\pi r^2 h=90\pi

Base area × height.

Worked example 3 — Prism

Cross-section area 1212, length 77. Volume?

Working

V=84V=84

Area × length.

Scaffolded Learning Sheet and answers (PDFs)

This page is a short, searchable overview for revision and search engines. Use the Scaffolded Learning Sheet first, then the Answers PDF for a full written solution. The printable PDFs remain the main classroom resource.