Sponge - Radius, Diameter, Circumference

Front

What is the radius of a circle?

Back

The radius is the distance from the center to an edge of a circle.

Front

What is the diameter of a circle?

Back

The diameter is the distance across the circle that runs through the center.

Front

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

Back

The diameter is twice the radius (Diameter = 2 x Radius).

Front

If the radius of a circle is 12 m, what is the diameter?

Back

The diameter is 24 m.

Front

What is the circumference of a circle?

Back

The circumference is the distance around the circle.

Front

What is the formula for the circumference of a circle?

Back

Circumference = π x Diameter.

Front

If the diameter of a circle is 10 cm, what is the radius?

Back

The radius is 5 cm.

Front

What is the relationship between radius and diameter?

Back

The diameter is always twice the radius.

Front

If a circle has a radius of 7 ft, what is its circumference?

Back

Circumference = 2 x π x 7 ft ≈ 43.98 ft.

Front

What does a diameter line look like in a circle?

Back

A diameter line passes through the center and touches two points on the circle.