
Understanding Arc Length of a Circle

Interactive Video
•
Mathematics
•
7th - 10th Grade
•
Hard
+1
Standards-aligned

Emma Peterson
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the arc length of a circle?
The diameter of the circle
The entire circumference of the circle
A portion of the circle's circumference
The radius of the circle
Tags
CCSS.HSG.C.B.5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT needed to calculate the arc length?
Radius
Circumference
Central angle
Diameter
Tags
CCSS.HSG.C.B.5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for arc length when the angle is in degrees?
Theta times 2πR
Theta divided by 180 times πR
Theta times R
Theta divided by 360 times 2πR
Tags
CCSS.HSG.C.B.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the first example, what is the approximate arc length for a radius of 2.5 cm and an angle of 95 degrees?
3.14 cm
4.15 cm
5.25 cm
6.28 cm
Tags
CCSS.HSG.C.B.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the exact arc length in the first example?
72/95
72π/95
95/72
95π/72
Tags
CCSS.HSG.C.B.5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the second example, what is the radius if the arc length is 50 units and the central angle is 120 degrees?
30.1 units
20.5 units
23.9 units
25.7 units
Tags
CCSS.HSG.C.B.5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula used to find the radius in the second example?
Arc length divided by (Theta/360) times 2π
Arc length times (Theta/180) divided by π
Arc length divided by (Theta/180) times π
Arc length times (Theta/360) divided by 2π
Tags
CCSS.4.MD.C.5B
CCSS.HSG.CO.A.1
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