Bell Work Circles: Circumference and Area

Flashcard
•
Mathematics
•
7th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula used to find the circumference of a circle?
Back
C = πd or C = 2πr
2.
FLASHCARD QUESTION
Front
What is the formula to find the area of a circle?
Back
A = πr²
3.
FLASHCARD QUESTION
Front
What is the relationship between radius and diameter?
Back
Diameter is twice the radius (d = 2r).
4.
FLASHCARD QUESTION
Front
What is the value of π (pi) approximately?
Back
π ≈ 3.14
5.
FLASHCARD QUESTION
Front
If the radius of a circle is 7 cm, what is the circumference?
Back
C = 2πr = 2 × π × 7 ≈ 43.96 cm
6.
FLASHCARD QUESTION
Front
If the radius of a circle is 5 cm, what is the area?
Back
A = πr² = π × 5² ≈ 78.54 cm²
7.
FLASHCARD QUESTION
Front
What is a radius in a circle?
Back
A radius is a line segment from the center of the circle to any point on its circumference.
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