Use the relationships between the radius, diameter, and circumference of a circle to explain the formula for finding the circumference and to solve related problems
10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.
Sample: the first question, solved
A circle's radius is 5cm. What is its diameter?
📘 Worked solution
✓10cm.
And one from the hard end
A circle has a circumference of 37.68cm. Find its radius.
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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