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Worksheets8.6-7 special rt tri, area/circ, arc length, sector area
Total questions: 14
Worksheet time: 42mins
Name
Class
Date
1.
What is the length of u and v in this 30-60-90 triangle?
a)
u = 8 v = 4√3
b)
u = 4√2 v = 8
c)
u = 16 v = 8
d)
u = 4√3 v = 8
2.
a)
22
b)
22√2
c)
44
d)
44√3
3.
a)
12
b)
6
c)
5
d)
18
4.
a)
a=4 b=2√2
b)
a=2√2 b=2√2
c)
a=2√2 b=4
d)
a=4 b=4
5.
Find a.
a)
3
b)
3√3
c)
6
d)
2√3
6.
Find a.
a)
2√3
b)
2
c)
12
d)
6
7.
Find the area of the circle. Use 3.14 for π. Round to the nearest tenth if necessary.
a circle with radius 48 mm
a circle with radius 48 mm
a)
7,234.56 mm2
b)
2,216.46 mm2
c)
7,934.59 mm2
d)
7,314.22 mm2
8.
Find the Circumference.
a)
31.4 in
b)
78.5 in sq
c)
15.7 in
d)
3.14 in
9.
Find the arc length. Leave your answer in terms of π.
a)
7/4π
b)
7/2π
c)
1/8π
d)
45π
10.
Find the length of the bold arc.Leave pi in your answer.
a)
5688π ft
b)
15.8π ft
c)
150.4π ft
d)
54,150π ft
11.
Alison is jogging on a circular track that has a radius of 140 feet. She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.
a)
47
b)
74
c)
94
d)
123
12.
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.
13.
is the formula for?
a)
arc length
b)
area of a sector
c)
area of a segment
d)
arc measure
14.
FIND THE SECTOR AREA OUTLINED IN BOLD
a)
A
b)
B
c)
C
d)
D
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