Given that m∠AOB = 13π/18 and the radius is 8 cm, what is the length of arc AB?
a)
13π/8 cm
b)
52π/9 cm
c)
π/9 cm
d)
9π/52
3.
What is the area of sector GPH?
a)
9π yd2
b)
32π yd2
c)
18π yd2
d)
6π yd2
4.
Find the area of the shaded sector of the circle.
a)
b)
c)
d)
5.
In a circle, a 90° sector has area 64π in2. What is the radius of the circle?
a)
16 in
b)
32 in
c)
64 in
d)
128 in
6.
Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer to the nearest tenth of a square inch.
a)
9.2 sq. in.
b)
10.5 sq. in.
c)
31.4 sq. in.
d)
38.2 sq. in.
7.
What is the area of the shaded region? Round to the nearest hundredth.
a)
26
b)
452.39
c)
113.10
d)
40715.04
8.
Find the arc length of the circle. (Leave answers in terms of . Do not round your answer.)
a)
27π km
b)
18π km
c)
15π km
d)
245π km
9.
Find the arc length of the circle. (Round your answer to the nearest tenth.)
a)
42.4 m
b)
21.2 m
c)
84.8 m
d)
6.7 m
10.
What is the area of the shaded sector?
a)
40π/9
b)
400π/9
c)
80π/9
d)
1600π/9
11.
Which of the following formulas calculates the arc length of a circle? (Select ALL that apply.)
a)
180θ×2πr
b)
360θ×2πr
c)
360θ×πd
d)
360θ×πr2
12.
Find the arc length of the circle. (Leave answers in terms of . Do not round your answer.)
a)
27π km
b)
18π km
c)
15π km
d)
215π
13.
Match the answers to the following problems. (HINT: change your answer to decimal)
20.4
Problem 1
47.1
Problem 4
5.2
Problem 3
18.8
Problem 2
14.
Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer as an exact value
a)
5π/3
b)
10π/3
c)
10π
d)
40π
15.
What is the area of the shaded region? Round to the nearest hundredth.