Radius and Diameter

Front

What is the definition of 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 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 2 yd, what is the diameter?

Back

4 yd

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 10 km, what is the radius?

Back

5 km

Tags

CCSS.7.G.B.4

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

Is 4 yd a radius or diameter if the radius is 2 yd?

Back

Diameter.

Tags

CCSS.HSG.C.A.2

Front

If a circle has a radius of 8 yd, what is its diameter?

Back

16 yd

Tags

CCSS.7.G.B.4

Front

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

Back

Diameter = 2 x Radius.

Tags

CCSS.7.G.B.4

Front

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

Back

Radius = Diameter / 2.

Tags

CCSS.7.G.B.4

Front

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

Back

6 cm.

Tags

CCSS.7.G.B.4