Circles and Circumference Flashcard

Front

Which equation would you use to find circumference?

Back

πd

Front

What is circumference?

Back

The distance around a circle.

Front

What is the diameter of the circle?

Back

6

Front

Which of the following best describes the value of pi?

Back

The relationship between the circumference and diameter.

Front

What is the formula for the circumference of a circle?

Back

C = πd or C = 2πr

Front

If the radius of a circle is 7 cm, what is the circumference?

Back

43.96 cm

Front

What does the diameter of a circle represent?

Back

A line from side to side passing through the center.

Front

How do you calculate the radius from the diameter?

Back

Radius = Diameter / 2

Front

What is the relationship between radius and circumference?

Back

C = 2πr

Front

If the circumference of a circle is 31.4 cm, what is the diameter?

Back

10 cm