Do not use a calculator for the following questions.

1) The diagram below shows a circle with a radius of 4 cm. What is the diameter of the circle?

**Part 1**1) The diagram below shows a circle with a radius of 4 cm. What is the diameter of the circle?

2) The diagram below shows a circle with a radius of 6 cm. What is the diameter of the circle?

3) A circle has a radius of 4.5 cm. What is the diameter of the circle?

4) The diagram below shows a circle with a diameter of 10 cm. What is the radius of the circle?

5) The diagram below shows a circle with a diameter of 13 cm. What is the radius of the circle?

6) A circle has a diameter of 20 cm. What is the radius of the circle?

7) A circle has a radius of 12 cm. What is the diameter of the circle?

8) A circle has a diameter of 18 cm. What is the radius of the circle?

**Part 2**

1) The circle below has a variety of different features on it.

What are the names for each of these features?

2) There is a sector and segment on the circle below. Which label, A or B, is which?

*Note: C is labelling the line and not the area created by the line.*2) There is a sector and segment on the circle below. Which label, A or B, is which?

3) On the circle below we have a minor and major arc and a minor and major segment. Which out of A, B, C and D is which?

*Note: A and B are areas and C and D are lines.*4) On the circle below we have a minor and major arc, and a minor and major sector. Which out of A, B, C and D is which?

*Note: A and B are areas and C and D are lines.*