What is the formula for the area of a circle?
Area of Circles and Composite Figures

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Area = πr², where r is the radius of the circle.
2.
FLASHCARD QUESTION
Front
What is the value of π (pi) approximately?
Back
π is approximately 3.14.
3.
FLASHCARD QUESTION
Front
How do you find the radius of a circle if you know the diameter?
Back
Radius = Diameter / 2.
4.
FLASHCARD QUESTION
Front
What is the area of a circle with a radius of 7 cm?
Back
Area = π(7)² ≈ 153.94 cm².
5.
FLASHCARD QUESTION
Front
What is a composite figure?
Back
A composite figure is a shape that is made up of two or more simple shapes.
6.
FLASHCARD QUESTION
Front
How do you find the area of a composite figure?
Back
Find the area of each simple shape and then add them together.
7.
FLASHCARD QUESTION
Front
What is the area of a triangle?
Back
Area = 1/2 × base × height.
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