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Arcs and Sectors Review
供稿人: Canter
(原作者: Dilaura)
11.3
What is the correct formula for finding
arc length?
πr∙(m∡ / 360)
2πr2(m∡ / 360)
πr2∙(m∡ / 360)
2πr∙(m∡ / 360)
11.3
What is the correct formula for findingthe area of a sector
πr∙(m∡ / 360)
2πr2(m∡ / 360)
πr2∙(m∡ / 360)
2πr∙(m∡ / 360)
11.3
Find the length of the arc BC to the nearest tenth.
5 in
arc BC = 
11.3
Find the length of the arcs below.Round to the nearest tenth.
8 cm
arc BC = 
arc DB =
Find the arc lengths below if the radius = 3 feet. 
Round answers to the nearest tenth.
11.3
95o
3 ft.
arc DFE =
arc EB =
11.3
Find the length of the arcs below.Round to the nearest tenth.
8 cm
arc BCD =
11.3
Identify the different parts of the circleby dragging the correct labels to their correctlocations.
segment of
a circle
?
sector of
a circle
?
arc of a circle
?
Find the area of the orange sector.  Leave your answerin terms of π.
11.3
100o
6 in
area of sector =
π in2
Find the area of the orange sector.  Leave your answerin terms of π and round to the nearest tenth.
11.3
48o
4 in
area of sector =
π in2
Find the area of sector BAC. Round your answer to 
the nearest tenth.
11.3
diameter = 16 ft
area of sector =
ft2
Find the area of the shaded sector. 
Round your answer to the nearest tenth.
11.3
7 in
area of sector =
in2
11.3
Find the area of the shaded segment. 
Round to the nearest tenth.
5 cm
Area of segment =
cm2
11.3
Find the area of the shaded segment. 
Round to the nearest tenth.
9 ft
Area of segment =
ft2
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