Circumference of Circles

Front

What is the circumference of a circle?

Back

The distance around the circle.

Tags

CCSS.7.G.B.4

Front

What is the formula for calculating the circumference of a circle?

Back

C = π·d, where C is the circumference and d is the diameter.

Tags

CCSS.7.G.B.4

Front

What does π (pi) approximately equal?

Back

3.14

Tags

CCSS.HSG.GMD.A.1

Front

What is the diameter of a circle?

Back

A line through the center of a circle that connects two points on the circle.

Front

If the radius of a circle is 33 ft, what is the circumference?

Back

207.2 ft

Tags

CCSS.7.G.B.4

Front

What does C represent in the formula C = π·d?

Back

Circumference

Tags

CCSS.7.G.B.4

Front

How do you find the diameter if you know the radius?

Back

Diameter = 2 × Radius.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 65 m, what is the circumference?

Back

204.1 m

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and circumference?

Back

Circumference is π times the diameter.

Tags

CCSS.7.G.B.4

Front

What is the radius of a circle?

Back

The distance from the center of the circle to any point on the circle.