What is the diameter of a circle?
Circles Spiral Review

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
The diameter is the distance across a circle through its center, equal to twice the radius.
2.
FLASHCARD QUESTION
Front
How do you calculate the circumference of a circle?
Back
Circumference = π × diameter or Circumference = 2 × π × radius.
3.
FLASHCARD QUESTION
Front
If the radius of a circle is 7 cm, what is the diameter?
Back
The diameter is 14 cm (diameter = 2 × radius).
4.
FLASHCARD QUESTION
Front
What is the relationship between diameter and radius?
Back
The diameter is twice the length of the radius.
5.
FLASHCARD QUESTION
Front
How do you find the area of a circle?
Back
Area = π × radius².
6.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a diameter of 10 cm?
Back
Circumference = π × 10 cm ≈ 31.42 cm.
7.
FLASHCARD QUESTION
Front
If a bicycle wheel has a diameter of 70 cm, how far does it travel in one revolution?
Back
It travels approximately 220 cm (Circumference = π × 70 cm).
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