What are the two basic formulae for calculating the circumference of a circle?

Circumference Calculations and Formulas

Interactive Video
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Mathematics
•
5th - 8th Grade
•
Hard

Liam Anderson
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
k = 2 * v * D or K = V * R
k = v * R or K = 2 * V * D
k = V * D or K = 2 * R * V
k = v * D or K = 2 * V * R
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the formula k = 2 * V * R, what does 'R' represent?
Diameter
Circumference
Radius
Area
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the circumference of a 3/4 circle?
3/4 * V * R + 2R
3/4 * 2 * V * D + 2D
3/4 * V * D + 2D
3/4 * 2 * V * R + 2R
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the radius of a circle is a multiple of 7, which value of V should be used?
3.14
7/22
22/7
3.14159
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the circumference of a 3/4 circle with a radius of 7 cm?
14 cm
22 cm
33 cm
47 cm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the circumference of a 1/4 circle?
1/4 * V * R + 2R
1/4 * 2 * V * D + 2D
1/4 * V * D + 2D
1/4 * 2 * V * R + 2R
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the circumference of a 1/4 circle with a radius of 10 cm?
21.57 cm
15.7 cm
47 cm
36 cm
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