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 is 5, what is the diameter?

Back

10

Front

If the diameter is 12, what is the radius?

Back

6

Front

What is the relationship between radius and diameter?

Back

The diameter is always twice the length of the radius.

Front

What shape has a constant radius from its center?

Back

Circle

Front

If the diameter of a circle is 14, what is the radius?

Back

7

Front

What is the formula to calculate the diameter from the radius?

Back

Diameter = 2 × Radius

Front

What is the formula to calculate the radius from the diameter?

Back

Radius = Diameter / 2

Front

If a circle has a radius of 3, what is its diameter?

Back

6