2. What do you call line segment N? A. radius B. diameter C. secant D. tangent

3. What do you call the distance from point R to point M? A. radius B. diameter C. secant D. tangent

4. What is the diameter of the circle? A. 7.5 cm B. 14.10 cm C. 15 cm D. 22.5 cm 5

. What is the circumference of the circle? A. 15 cm B. 23.55 cm C. 47.10 cm D
176.625 cm
6. What is the circumference of the circle if the radius is increased by 2.5 cm? A. 20 cm B. 31.40 cm C. 62.80 cm D. 117.75cm

7. What do you call the instrument that is used in drawing circles? A. ruler B. compass C. protractor D. triangle

8. What is the diameter of the circle given the radius of 8cm? A. 20cm B. 18cm C. 16cm D. 15cm

9. If the diameter is 20cm, what is the radius of the circle? A. 20cm B. 10cm C. 40cm D. 5cm

10. Write an equation to represent the relation between the radius, r, and the diameter, d. A. r = 2 B. r =2x (d) C. r = r x d D. d= r x r​