Area and Circumference Flashcard
Flashcard
•
Quizizz Content
•
Mathematics
•
6th - 7th Grade
•
Hard
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15 questions
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1.
FLASHCARD
Front
What is the formula for the area of a circle?
Back
A = πr², where r is the radius.
2.
FLASHCARD
Front
What is the formula for the circumference of a circle?
Back
C = 2πr or C = πd, where d is the diameter.
3.
FLASHCARD
Front
If a circle has a radius of 4 feet, what is its circumference?
Back
C = 2π(4) = 8π ≈ 25.12 feet.
4.
FLASHCARD
Front
If a circle has a diameter of 10 inches, what is its area?
Back
A = π(5)² = 25π ≈ 78.54 square inches.
5.
FLASHCARD
Front
What does 'diameter' mean?
Back
The distance across a circle through its center.
6.
FLASHCARD
Front
What does 'radius' mean?
Back
The distance from the center of a circle to any point on its circumference.
7.
FLASHCARD
Front
What is the relationship between diameter and radius?
Back
The diameter is twice the radius (d = 2r).
8.
FLASHCARD
Front
How do you find the circumference of a circle using the diameter?
Back
C = πd.
9.
FLASHCARD
Front
What is the approximate value of π?
Back
π ≈ 3.14.
10.
FLASHCARD
Front
If a circular garden has a radius of 6 meters, what is its area?
Back
A = π(6)² = 36π ≈ 113.1 square meters.
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