Radius and Diameter

Front

What is the radius of a circle?

Back

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

Front

What is the diameter of a circle?

Back

The diameter of a circle is the distance from one edge of the circle to the opposite edge, passing through the center.

Tags

CCSS.HSG.C.A.2

Front

If the radius of a circle is 6 cm, what is the diameter?

Back

The diameter is 12 cm (Diameter = 2 x Radius).

Tags

CCSS.7.G.B.4

Front

Is the red line a radius or diameter of the circle?

Back

Radius.

Front

What is the relationship between radius and diameter?

Back

The diameter is twice the length of the radius (Diameter = 2 x Radius).

Tags

CCSS.7.G.B.4

Front

What is the formula to calculate the circumference of a circle using the radius?

Back

Circumference = 2 x π x Radius.

Tags

CCSS.7.G.B.4

Front

What is the formula to calculate the area of a circle using the radius?

Back

Area = π x (Radius)^2.

Tags

CCSS.7.G.B.4

Front

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

Back

The radius is 12 cm (Radius = Diameter / 2).

Tags

CCSS.7.G.B.4

Front

What does the term 'circumference' refer to?

Back

Circumference is the distance around the circle.

Front

What is the measurement around the circle called?

Back

Circumference.