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.

Tags

CCSS.HSG.C.A.2

Front

If the radius of a circle is 5 cm, what is the diameter?

Back

10 cm

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 20 m, what is the radius?

Back

10 m

Tags

CCSS.7.G.B.4

Front

Is the line segment connecting the center of a circle to a point on the circle 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 circle a radius or diameter?

Back

Diameter

Front

What is the relationship between radius and diameter?

Back

The diameter is twice the length of the radius.

Tags

CCSS.7.G.B.4

Front

If a circle has a radius of 12 inches, what is its diameter?

Back

24 inches

Tags

CCSS.7.G.B.4

Front

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

Back

Diameter = 2 x Radius

Tags

CCSS.7.G.B.4

Front

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

Back

Radius = Diameter / 2

Tags

CCSS.7.G.B.4