What is the diameter of a circle?
circumference of a circle

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The diameter is the distance across the circle through its center, equal to twice the radius.
2.
FLASHCARD QUESTION
Front
What is the circumference of a circle?
Back
The circumference is the distance around the circle.
3.
FLASHCARD QUESTION
Front
What is the formula to calculate the circumference of a circle?
Back
Circumference = π × diameter or Circumference = 2 × π × radius.
4.
FLASHCARD QUESTION
Front
If the radius of a circle is 5 cm, what is the diameter?
Back
Diameter = 2 × radius = 2 × 5 cm = 10 cm.
5.
FLASHCARD QUESTION
Front
If the diameter of a circle is 14 cm, what is the circumference?
Back
Circumference = π × diameter = π × 14 cm ≈ 43.98 cm.
6.
FLASHCARD QUESTION
Front
What is the relationship between diameter and radius?
Back
The diameter is twice the length of the radius.
7.
FLASHCARD QUESTION
Front
What is π (pi)?
Back
π (pi) is a mathematical constant approximately equal to 3.14, representing the ratio of the circumference of a circle to its diameter.
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