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Year 8 Measurement and geometry WA8MMGTW2 5 pages · 34 questions Core
Year 8 Area of a Circle Worksheet
Free Year 8 area of a circle worksheet (WA8MMGTW2): A = πr², radius from area, rings and a pizza value problem. With marking key.
What's covered
- Calculating area with A = πr²
- Finding the radius from a given area
- Finding the area of rings and comparing circle sizes
About this worksheet
This free Year 8 area of a circle worksheet is written for the Western Australian curriculum and mapped to SCSA content description WA8MMGTW2. It targets one skill so students can practise until it sticks: by the end, students can say “I can use A = πr² to find the area of a circle from its radius or diameter, find the radius from the area, and find the area of rings.”
What’s inside
- Key idea box – a short explanation with worked examples to read before starting.
- A · Fluency (16 questions) – quick practice to build accuracy.
- B · Core (10 questions) – worded problems set in everyday Australian contexts.
- C · Reasoning (4 questions) – explain, justify and spot the error.
- D · Challenge (4 questions) – harder multi-step and problem-solving questions for students ready to stretch.
- Separate marking key – every answer with working, plus mark allocations and marking criteria for reasoning questions.
Skills covered
- Calculating area with A = πr²
- Finding the radius from a given area
- Finding the area of rings and comparing circle sizes
How to use this worksheet
Start with the Key idea box, then complete Section A (use a calculator only where a question says so). Most students should attempt Sections B and C; Section D suits students aiming for the top of the class or preparing for accelerated or extension maths. The worksheet is marked out of 58, and the score box on the last page helps students see which section needs more practice.
Common mistakes to watch for
- Using the diameter instead of the radius
- Calculating (πr)² instead of πr²
- Thinking doubling the diameter doubles the area
- Leaving out square units
Where this fits in the WA Year 8 sequence
Area of a Circle sits in the Two-dimensional space and structures sub-strand of Measurement and geometry. It is one of a set of short, single-skill EduLift worksheets that split each Year 8 content description into sub-skills. Use the previous and next links to work through the sequence in order.
Common errors we see in tutoring
- Using the diameter instead of the radius
- Calculating (πr)² instead of πr²
- Thinking doubling the diameter doubles the area
- Leaving out square units
Answer key (with worked solutions)
The answer key is a separate PDF with every question worked, not just the final answers.
Download the answer key (PDF)Stuck on a section? That's what our Year 8 tutors are for.
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