✨ Free preview
⭕
Circumference problems
Find the perimeter of semicircles and quadrants, give exact answers in terms of π, and work backwards from a circumference to the radius.
⏱ 18 min❓ 9 questions
What you'll be able to do
- ✔I can find the perimeter of a semicircle or quadrant, including the straight edges
- ✔I can give a perimeter exactly in terms of π or rounded to a required accuracy
- ✔I can find the radius or diameter of a circle from its circumference
How this works
- 1Read the short explanations first — they teach you what you need before each question.
- 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
- 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.
What's inside
9 questions and 1 quick teaching card, including:
- 🔘Multiple choice — Tap the answer you think is best, then check it.
- 🔢Number answer — Work out the answer and type the number.
👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.
Sign in and subscribe to unlock the full lesson and save your progress.
Curriculum: AC9M8M03