Area & Circumference of Circles
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for the area of a circle?
Back
2.
FLASHCARD QUESTION
Front
What is the formula for the circumference of a circle?
Back
The circumference (C) of a circle is calculated using the formula: C = 2 imes ext{pi} imes r, where r is the radius.
3.
FLASHCARD QUESTION
Front
What is the relationship between diameter and radius?
Back
The diameter (d) of a circle is twice the radius (r): d = 2r.
4.
FLASHCARD QUESTION
Front
How do you find the radius if you know the diameter?
Back
5.
FLASHCARD QUESTION
Front
What is the value of pi (π) approximately?
Back
Pi (π) is approximately equal to 3.14.
6.
FLASHCARD QUESTION
Front
If a circle has a radius of 5 cm, what is its area?
Back
7.
FLASHCARD QUESTION
Front
If a circle has a diameter of 10 cm, what is its circumference?
Back
The circumference is C = 2 imes ext{pi} imes 5 = 31.4 ext{ cm}.
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