Radius and Diameter REVIEW

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 10 m, what is the diameter?

Back

20 m

Front

If the diameter of a circle is 50 m, what is the radius?

Back

25 m

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 the center of a circle to its edge a radius or diameter?

Back

Radius

Front

Is the line segment that passes through the center of the circle and connects two points on the circumference a radius or diameter?

Back

Diameter

Front

If a circle has a diameter of 100 m, what is the radius?

Back

50 m

Front

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

Back

Radius = Diameter / 2

Front

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

Back

Diameter = Radius x 2