Circumference of a Circle

Flashcard
•
Mathematics
•
6th - 8th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the diameter of a circle?
Back
The diameter is the distance across a circle through its center, equal to twice the radius.
Tags
CCSS.HSG.C.A.2
2.
FLASHCARD QUESTION
Front
If the diameter of a circle is 16 cm, what is the radius?
Back
The radius is 8 cm, which is half of the diameter.
Tags
CCSS.7.G.B.4
3.
FLASHCARD QUESTION
Front
What is the formula to calculate the circumference of a circle?
Back
Circumference = π × diameter or Circumference = 2 × π × radius.
Tags
CCSS.7.G.B.4
4.
FLASHCARD QUESTION
Front
If the radius of a circle is 10 ft, what is the circumference?
Back
Circumference = 2 × π × 10 ft ≈ 62.83 ft.
Tags
CCSS.7.G.B.4
5.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a diameter of 14 cm?
Back
Circumference ≈ 43.98 cm.
Tags
CCSS.7.G.B.4
6.
FLASHCARD QUESTION
Front
If the diameter of a circle is 19 inches, what is the radius?
Back
The radius is 9.5 inches.
Tags
CCSS.7.G.B.4
7.
FLASHCARD QUESTION
Front
What is π (pi)?
Back
π (pi) is a mathematical constant approximately equal to 3.14, representing the ratio of the circumference of a circle to its diameter.
Tags
CCSS.HSG.GMD.A.1
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