Radius and Diameter REVIEW

Front

What is the radius of a circle?

Back

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

Front

What is the diameter of a circle?

Back

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

Front

If the radius of a circle is 18, what is the diameter?

Back

The diameter is 36.

Front

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

Back

The diameter is 48 m.

Front

What is the relationship between radius and diameter?

Back

The diameter is always twice the radius.

Front

If the diameter of a circle is 16, what is the radius?

Back

The radius is 8.

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.

Front

If the radius is 22 ft, what is the diameter?

Back

The diameter is 44 ft.

Front

If the radius is 11 in, what is the diameter?

Back

The diameter is 22 in.