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SubjectsMathematicsAlgebra & GeometryChapter 7 — Mensuration7.3 Volumes — 3D Figures

Topic 7.3 · Mathematics · Mensuration

Volumes — 3D Figures

Volumes — 3D Figures is studied as part of "Mensuration" (Algebra & Geometry) in Mathematics. Areas, perimeters, volumes and surface areas of 2D and 3D figures.

In the examination context, volumes — 3d figures carries conceptual questions that test both factual recall and analytical understanding. Revise this topic in sequence with the rest of the chapter so that chronological and thematic links are clear.

Important Facts

Surface area of cube
6a²
Volume of cone
(1/3)πr²h
Area of circle
πr²
Volume of cylinder
πr²h

Key Points

  • Area of circle — πr²
  • Volume of cylinder — πr²h
  • Surface area of cube — 6a²
  • Volume of cone — (1/3)πr²h

Important Names

——
Exam-Oriented Notes
  • »Memorise the formula sheet: rectangle, square, circle, triangle, cylinder, cone, sphere, cube, cuboid.

Related topics

7.1 Areas — 2D Figures7.2 Perimeter & Diagonals7.4 Surface Areas
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