Support · Stage 5 · Area and surface area A

Support 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

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 area of a circle: A = πr², where r is the length of the radius

Stage 4 · Area Draft mapping

  • Interactive toolEnrichment
    Mathigon: Circles and Pi
    Mathigon (Amplify) · Interactive (browser) · Free · Link checked 2026-10-15 · Hands-on, No prep
    Use it for: Discover π and circle area interactively.
  • Interactive toolStarter
    Mathsisfun: Circle area by sectors
    Maths Is Fun · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Rearrange sectors to see why A = πr².
  • Corbettmaths practice questions: Area: circles
    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: circles for drill or a quick check.
  • WorksheetDrill
    Kuta free worksheet: Area and circumference of circles
    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 and circumference of circles; good for drill or homework.
  • WorksheetDrill
    Kuta free worksheet: Circumference and area of circles
    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 circumference and area of circles; good for drill or homework.
  • VideoStarter
    Corbettmaths video: Area: circles
    Corbettmaths · Video · Free · Link checked 2026-10-15 · No prep
    Use it for: Short worked-example video on area: circles to model the method before practice or for flipped revision.

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