Circumference and Circles
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of a radius in a circle?
Back
The radius is the distance from the center of the circle to any point on the circle.
2.
FLASHCARD QUESTION
Front
What is the relationship between a radius and a diameter?
Back
The diameter is twice the length of the radius.
Tags
CCSS.7.G.B.4
3.
FLASHCARD QUESTION
Front
How can you identify a radius in a diagram of a circle?
Back
A radius is a line segment that connects the center of the circle to any point on the circle.
4.
FLASHCARD QUESTION
Front
What is the formula for calculating the circumference of a circle?
Back
The circumference (C) can be calculated using the formula C = 2πr, where r is the radius.
Tags
CCSS.7.G.B.4
5.
FLASHCARD QUESTION
Front
If the diameter of a circle is 10 cm, what is the radius?
Back
The radius is 5 cm, since the radius is half of the diameter.
Tags
CCSS.7.G.B.4
6.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a radius of 7 cm?
Back
The circumference is approximately 43.98 cm, calculated using C = 2π(7).
Tags
CCSS.7.G.B.4
7.
FLASHCARD QUESTION
Front
What segment represents the diameter in a circle?
Back
The diameter is the longest chord of the circle, passing through the center and connecting two points on the circle.
Tags
CCSS.HSG.C.A.2
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