What is the circumference of a circle?
Circumference

Flashcard
•
Mathematics
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The distance around the circle, calculated using the formula C = π·d or C = 2·π·r.
2.
FLASHCARD QUESTION
Front
What does 'r' represent in the formula C = 2·π·r?
Back
Radius, which is the distance from the center of the circle to any point on its circumference.
3.
FLASHCARD QUESTION
Front
What is the relationship between diameter and radius?
Back
The diameter is twice the radius (d = 2·r).
4.
FLASHCARD QUESTION
Front
What is the formula to find the diameter if you know the circumference?
Back
d = C/π.
5.
FLASHCARD QUESTION
Front
If the radius of a circle is 5 in, what is the diameter?
Back
10 in.
6.
FLASHCARD QUESTION
Front
If the diameter of a circle is 20 ft, what is the radius?
Back
10 ft.
7.
FLASHCARD QUESTION
Front
What is π (pi)?
Back
A mathematical constant approximately equal to 3.14, used in calculations involving circles.
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