Circles Circles Circles

Front

What is the area of a circle?

Back

The space inside the circle.

Front

Which of the following names a radius?

Back

segment DB

Front

Is the red line a radius or diameter of the circle?

Back

Radius

Front

What number does π represent?

Back

3.14

Tags

CCSS.HSG.GMD.A.1

Front

Which segment is the diameter?

Back

BD

Front

What is the formula for the area of a circle?

Back

A = πr², where r is the radius.

Tags

CCSS.7.G.B.4

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 the circumference of a circle?

Back

C = 2πr or C = πd, where d is the diameter.

Tags

CCSS.7.G.B.4

Front

What is a diameter?

Back

A line from one side of the circle to the other, passing through the center.

Front

What is a radius?

Back

A line from the center of the circle to any point on its edge.