Radius and Diameter

Front

What is the definition of a 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 a 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 10m, what is the diameter?

Back

20m

Front

If the diameter of a circle is 24m, what is the radius?

Back

12m

Front

What is the relationship between radius and diameter?

Back

The diameter is always twice the length of the radius.

Front

Is the line segment connecting two points on the circumference of a circle a radius or diameter?

Back

It can be either, depending on whether it passes through the center (diameter) or not (radius).

Front

What is the diameter of a circle with a radius of 5m?

Back

10m

Front

What is the radius of a circle with a diameter of 30m?

Back

15m

Front

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

Back

14cm

Front

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

Back

Diameter = 2 x Radius