area and circumference of a circle

Front

What is the circumference of a circle?

Back

The measurement around the circle.

Front

What does the red line represent in a circle?

Back

The diameter of the circle.

Front

What is the diameter of a circle?

Back

The distance across the circle through the center.

Front

What is the radius of a circle?

Back

The distance from the center of the circle to an edge.

Front

If the diameter of a circle is 10 in., what is its radius?

Back

5 in.

Front

True or False: The diameter is the same as the radius.

Back

False.

Front

What is the formula for the circumference of a circle?

Back

C = πd or C = 2πr.

Front

What does 'π' represent in the circumference formula?

Back

Pi, approximately 3.14.

Front

If the radius of a circle is 3 in., what is the diameter?

Back

6 in.

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 x Radius.