Area and Circumference Flashcard
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of a radius in a circle?
Back
The radius is the distance from the center of the circle to any point on its circumference.
2.
FLASHCARD QUESTION
Front
What is the definition of a diameter in a circle?
Back
The diameter is the distance across the circle through its center, equal to twice the radius.
3.
FLASHCARD QUESTION
Front
If the diameter of a circle is 70 m, what is the radius?
Back
35 m
4.
FLASHCARD QUESTION
Front
What is the formula for calculating the circumference of a circle?
Back
Circumference = π × diameter or Circumference = 2 × π × radius.
5.
FLASHCARD QUESTION
Front
If the radius of a circle is 9 meters, what is the circumference using π = 3?
Back
56.52 meters
6.
FLASHCARD QUESTION
Front
What is the relationship between radius and diameter?
Back
The diameter is twice the length of the radius.
7.
FLASHCARD QUESTION
Front
If a circle has a radius of 20 ft, what is its diameter?
Back
40 ft
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