Radius and Diameter

Front

What is the definition of Radius?

Back

The radius is the distance from the center of a circle to any point on its circumference.

Front

What is the definition of Diameter?

Back

The diameter is the distance across a circle through its center, equal to twice the radius.

Front

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

Back

The diameter is 20 cm (Diameter = 2 x Radius).

Front

If the diameter of a circle is 30 cm, what is the radius?

Back

The radius is 15 cm (Radius = Diameter / 2).

Front

Is the line segment from the center to the edge of a circle called Radius or Diameter?

Back

Radius.

Front

Is the line segment that passes through the center and connects two points on the circle called Radius or Diameter?

Back

Diameter.

Front

What is the relationship between Radius and Diameter?

Back

The diameter is always twice the length of the radius.

Front

If a circle has a radius of 5 cm, what is its diameter?

Back

10 cm.

Front

If a circle has a diameter of 12 cm, what is its radius?

Back

6 cm.

Front

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

Back

Circumference = π x Diameter.