Radius and Diameter REVIEW

Front

What is the definition of diameter?

Back

The diameter is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Front

How is the diameter related to the radius?

Back

The diameter is twice the length of the radius. Formula: Diameter = 2 x Radius.

Front

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

Back

The radius is 8 (since Radius = Diameter / 2).

Front

What is the formula to calculate the diameter if the radius is known?

Back

Diameter = 2 x Radius.

Front

What is the diameter of a circle with a radius of 11 inches?

Back

The diameter is 22 inches (since Diameter = 2 x 11 in).

Front

If a circle has a diameter of 80 feet, what is its radius?

Back

The radius is 40 feet (since Radius = Diameter / 2).

Front

What is the diameter of a circle with a radius of 32 inches?

Back

The diameter is 64 inches (since Diameter = 2 x 32 in).

Front

What is the relationship between diameter and circumference?

Back

The circumference of a circle is equal to π times the diameter. Formula: Circumference = π x Diameter.

Front

How do you calculate the circumference if you know the diameter?

Back

Circumference = π x Diameter.

Front

What is the diameter of a circle if the circumference is 50.24 inches?

Back

The diameter is 16 inches (since Diameter = Circumference / π).