ACARA AC9M8M01, Area and perimeter of composite shapes

Year 8 · Measurement

Solve problems about the area and perimeter of irregular and composite shapes using suitable units.

Below are free printable maths worksheets that support AC9M8M01. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.

Teaching guide

What students learn

Solve problems about the area and perimeter of irregular and composite shapes using suitable units.

Perimeter = 5 + 3 + 5 + 3 = 16 units

How to teach it

Sort and name 2D and 3D shapes by their properties (sides, angles, faces), then build up to perimeter (add the sides) and area (cover with unit squares).

Worked example

Rectangle 2 cm by 15 cm. Area = ___ sq cm

Answer: 30

Generated and checked in code, so it is correct.

Watch out for

Confusing perimeter and area, and judging a shape by its orientation rather than its properties.