circumference

Flashcard
•
Mathematics
•
7th Grade
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula to calculate the circumference of a circle?
Back
Circumference = 2 × π × radius or Circumference = π × diameter.
2.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a diameter of 10 cm?
Back
Circumference = π × diameter = π × 10 cm ≈ 31.4 cm.
3.
FLASHCARD QUESTION
Front
What is the diameter of a circle if its circumference is 31.4 cm?
Back
Diameter = Circumference / π ≈ 31.4 cm / π ≈ 10 cm.
4.
FLASHCARD QUESTION
Front
What is the relationship between circumference and diameter?
Back
The ratio of circumference to diameter is a constant known as π (pi), approximately 3.14.
5.
FLASHCARD QUESTION
Front
What is the radius of a circle?
Back
The radius is the distance from the center of the circle to any point on its circumference.
6.
FLASHCARD QUESTION
Front
If the radius of a circle is 5 cm, what is its circumference?
Back
Circumference = 2 × π × 5 cm ≈ 31.4 cm.
7.
FLASHCARD QUESTION
Front
What is the term for the distance around a circle?
Back
Circumference.
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