CORRECTIONS - Circles TEST
Flashcard
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
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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
Circumference = π × diameter or Circumference = 2 × π × radius.
2.
FLASHCARD QUESTION
Front
What is the formula for the area of a circle?
Back
Area = π × radius².
3.
FLASHCARD QUESTION
Front
If the diameter of a circle is 20 cm, what is the radius?
Back
Radius = diameter / 2 = 10 cm.
4.
FLASHCARD QUESTION
Front
What is the value of π (pi) approximately?
Back
π ≈ 3.14.
5.
FLASHCARD QUESTION
Front
How do you convert diameter to radius?
Back
Radius = diameter / 2.
6.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a radius of 5 cm?
Back
Circumference = 2 × π × 5 cm ≈ 31.4 cm.
7.
FLASHCARD QUESTION
Front
What is the area of a circle with a radius of 7 cm?
Back
Area = π × 7² cm² ≈ 153.94 cm².
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