Circumference of a circle
Lesson 15 / 16
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Lesson outcome
I can use the relationship C=πd to calculate unknown lengths in contexts involving the circumference of circles.
Show transcript
The formula can be used to find the circumference when you know the diameter.
The formula can be used to find the circumference when you know the radius.
The formula can be used to find the radius or diameter when you know the circumference.
These answers will be rounded to an appropriate degree of accuracy.
For the answer to be exact it needs to be left in terms of π.
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The same lesson as a pupil sees it. You can set any section as work on its own.
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