4th Nine Weeks Exam Review

What is the radius of a circle with a diameter of 16 cm?

• 6 cm

• 8 cm

• 10 cm

• 12 cm

What is the diameter of a circle with a radius of 4.5 in?

• 8 in

• 10 in

• 9 in

• 11 in

Find the circumference of a circle with a radius of 6 ft (use pi = 3.14).

• 37.68 ft

• 36 ft

• 18.84 ft

• 113.04 ft

Find the area of a circle with a radius of 5 m (use pi = 3.14).

• 25 m^2

• 78.5 m^2

• 31.4 m^2

• 50 m^2

A circle has a circumference of 62.8 cm. What is the diameter? (Hint: just divide the circumference by pi)

• 10 cm

• 15 cm

• 20 cm

• 25 cm

Two angles are complementary. One is 35. What is the other?

• 45

• 55

• 65

Two angles are supplementary. One measures 123. What is the other?

• 47

• 57

• 67

• 77

Vertical angles are always:

• Different

• Right angles

• Supplementary

• Congruent

What is the value of x if two adjacent angles form a straight angle and are (2x) and (4x)?

• 20

• 30

• 60

• 90

If angle A and angle B are complementary and angle A = (x + 15), angle B = (2x - 5), find x.

• 20

• 25

• 30

• 35