circumference of a circle
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the circumference of a circle?
Back
The distance around the circle, calculated as C = πd or C = 2πr.
2.
FLASHCARD QUESTION
Front
What is the formula for the circumference of a circle?
Back
C = πd or C = 2πr, where d is the diameter and r is the radius.
3.
FLASHCARD QUESTION
Front
What is the diameter of a circle?
Back
The distance across the circle through its center, equal to twice the radius (d = 2r).
4.
FLASHCARD QUESTION
Front
What is the radius of a circle?
Back
The distance from the center of the circle to any point on its circumference.
5.
FLASHCARD QUESTION
Front
If the radius of a circle is 5 cm, what is the diameter?
Back
10 cm (since diameter d = 2r).
6.
FLASHCARD QUESTION
Front
If the diameter of a circle is 16 cm, what is the radius?
Back
8 cm (since radius r = d/2).
7.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a radius of 5 in terms of π?
Back
10π square units.
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