What is the formula for the area of a circle?
Area of Circles

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Area = π × r², where r is the radius.
2.
FLASHCARD QUESTION
Front
What does the radius of a circle represent?
Back
The radius is the distance from the center of the circle to any point on its circumference.
3.
FLASHCARD QUESTION
Front
If the radius of a circle is 6, what is its area?
Back
Area = π × 6² = 113.1 (approximately).
4.
FLASHCARD QUESTION
Front
What is the value of π (pi) approximately?
Back
π (pi) is approximately 3.14.
5.
FLASHCARD QUESTION
Front
How do you find the diameter of a circle if you know the radius?
Back
Diameter = 2 × radius.
6.
FLASHCARD QUESTION
Front
If the diameter of a circle is 12, what is the radius?
Back
Radius = Diameter / 2 = 12 / 2 = 6.
7.
FLASHCARD QUESTION
Front
What is the area of a circle with a radius of 12?
Back
Area = π × 12² = 452.39 (approximately).
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