Support · Stage 5 · Area and surface area B (Path)

Support Apply Pythagoras’ theorem to find the slant heights, base lengths and perpendicular heights of right pyramids and right cones

Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.

Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.

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Prerequisite dot points

Develop and apply the formula to find the surface area of a closed cylinder: A = 2(πr)² + 2πrh, where r is the length of the radius and h is the perpendicular height

Stage 5 · Area and surface area A Draft mapping

Develop and apply the formula to find the area of a triangle: A = 1/2bh, where b is the base length and h is the perpendicular height

Stage 4 · Area Draft mapping

  • Interactive toolStarter
    Maths Is Fun: Area of plane shapes
    Maths Is Fun · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Area formulas for common shapes.
  • Corbettmaths practice questions: Area: triangle
    Corbettmaths · Web page · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Free printable graded practice questions (with answers) on area: triangle for drill or a quick check.
  • WorksheetDrill
    Kuta free worksheet: Area of triangles
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on area of triangles; good for drill or homework.
  • WorksheetDrill
    Kuta free worksheet: Understanding the triangle area formula
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on understanding the triangle area formula; good for drill or homework.
  • VideoStarter
    Corbettmaths video: Area: triangle
    Corbettmaths · Video · Free · Link checked 2026-10-15 · No prep
    Use it for: Short worked-example video on area: triangle to model the method before practice or for flipped revision.

Develop and apply the formula to find the area of a parallelogram: A = bh where b is the base length and h is the perpendicular height

Stage 4 · Area Draft mapping