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Area and circumference of circles

Stuck? Read the notes

	Answers
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Find the areas of the shapes below. Don't forget the units in your answer.


1. Find the area of the circle above.
2. Find the circumference of the circle above.

3. Find the area of the circle above.
4. Find the circumference of the circle above.

A circle has radius 10 mm.

5. Find its area.
6. Find its circumference.

A circle has diameter 10 cm.

7. Find its area.
8. Find its circumference.