Circles: Area vs Circumference
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for the circumference of a circle?
Back
C = 2πr or C = πd, where r is the radius and d is the diameter.
Tags
CCSS.7.G.B.4
2.
FLASHCARD QUESTION
Front
How do you calculate the area of a circle?
Back
A = πr², where r is the radius.
Tags
CCSS.7.G.B.4
3.
FLASHCARD QUESTION
Front
What is the relationship between diameter and radius?
Back
The diameter is twice the radius (d = 2r).
Tags
CCSS.7.G.B.4
4.
FLASHCARD QUESTION
Front
If a circle has a radius of 5 cm, what is its diameter?
Back
The diameter is 10 cm.
Tags
CCSS.7.G.B.4
5.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a diameter of 20 cm?
Back
C = 20π cm or approximately 62.83 cm.
Tags
CCSS.7.G.B.4
6.
FLASHCARD QUESTION
Front
What is the radius of a circle with a circumference of 31.4 cm?
Back
The radius is 5 cm.
Tags
CCSS.7.G.B.4
7.
FLASHCARD QUESTION
Front
What does the term 'circumference' refer to?
Back
Circumference is the distance around the circle.
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