Geometry Circles & Arcs 3

Question 1

A chord is 8 units long and is 3 units from the center. What is the radius (to nearest whole)?

Accepted Answer

5

Answer

4

Answer

6

Answer

7

Question 2

Two chords intersect inside a circle. One is divided into segments 3 and 8; the other into 4 and x. Find x.

Accepted Answer

6

Answer

5

Answer

7

Answer

12

Question 3

The circumference of a circle is 31.4. Using π ≈ 3.14, what is the diameter?

Accepted Answer

10

Answer

5

Answer

20

Answer

15

Question 4

A tangent line meets a radius at the point of tangency at an angle of:

Accepted Answer

90°

Answer

45°

Answer

60°

Answer

180°

Question 5

The arc opposite a 40° inscribed angle measures:

Accepted Answer

80°

Answer

40°

Answer

20°

Answer

160°

Question 6

In a circle of radius 10, a sector has area 25π. What is its central angle?

Accepted Answer

90°

Answer

45°

Answer

180°

Answer

120°

Question 7

The longest chord in any circle is called the:

Accepted Answer

Diameter

Answer

Radius

Answer

Tangent

Answer

Secant