Circle word problem example
23 October 2026
Circle word problems often ask children to use a simple formula. Understanding how to find the circumference helps build confidence with shapes and measurements.
Circle word problem
A circle has a radius of 5 cm. What is its circumference?
Step 1: Use the formula for circumference: C = 2 × π × radius
Step 2: Put in the radius: C = 2 × π × 5 cm
Step 3: Work out 2 × 5 = 10, so C = 10 × π cm
Step 4: Use π ≈ 3.14, so C = 10 × 3.14 = 31.4 cm
The correct answer is 31.4 cm.
Key insight: Once your child sees how the formula works, other circle word problems become much easier. They can now spot when to use the radius and how to work out the answer. Try practising with more questions like this to build fluency.
