Area of a Circle
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Medium
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the symbol for pi?
Back
π
Tags
CCSS.HSG.GMD.A.1
2.
FLASHCARD QUESTION
Front
What is the area of a circle?
Back
The amount of space inside of the circle.
3.
FLASHCARD QUESTION
Front
What is the formula for finding the area of a circle?
Back
A = π·r²
Tags
CCSS.7.G.B.4
4.
FLASHCARD QUESTION
Front
Find the area of a circle with a radius of 7 cm.
Back
A = π·(7)² = 153.94 cm² (approximately)
Tags
CCSS.7.G.B.4
5.
FLASHCARD QUESTION
Front
What does 'r' represent in the area formula A = π·r²?
Back
The radius of the circle.
Tags
CCSS.7.G.B.4
6.
FLASHCARD QUESTION
Front
What is the diameter of a circle?
Back
The distance across the circle through the center, equal to 2 times the radius.
Tags
CCSS.HSG.C.A.2
7.
FLASHCARD QUESTION
Front
If the radius of a circle is doubled, how does the area change?
Back
The area increases by a factor of four.
Tags
CCSS.7.G.B.4
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