Circles - Radius, Diameter & Circumference

Front

The distance across the circle through the center is called the...

Back

Diameter

Front

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

Back

Radius

Front

What is the formula to calculate the circumference of a circle?

Back

Circumference = 2 × π × radius

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × Radius

Front

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

Back

Diameter = 14 cm

Front

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

Back

Radius = 5 cm (Circumference = 2 × π × radius)