2. If the diameter of a circle changes from 5 cm to 15 cm, how will the circumference change?
A. Multiplies by 1/3
B. Multiplies by 3
C. Increases by 10
D. Decreases by 10
5. Given a circle with a circumference of 33 cm, find the radius.
A. 3.24
B. 5.25
C. 6.48
D. 10.50
8. A circle has an area of 36 inches squared. What is the area of a sector of the circle that had a central angle of 30 degrees? Please show all work!
Please help with the above questions(also there is one attached). Thanks!