Radius and Diameter

Front

What is the definition of a radius in a circle?

Back

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

Front

What is the definition of a diameter in a circle?

Back

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

Tags

CCSS.HSG.C.A.2

Front

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

Back

The diameter can be calculated by multiplying the radius by 2 (Diameter = 2 × Radius).

Tags

CCSS.7.G.B.4

Front

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

Back

The radius can be calculated by dividing the diameter by 2 (Radius = Diameter / 2).

Tags

CCSS.7.G.B.4

Front

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

Back

The diameter is 20 cm.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 30 m, what is the radius?

Back

The radius is 15 m.

Tags

CCSS.7.G.B.4

Front

What is the relationship between radius and diameter?

Back

The diameter is always twice the length of the radius.

Tags

CCSS.7.G.B.4

Front

In a circle, if a line segment connects two points on the circumference and passes through the center, what is it called?

Back

It is called the diameter.

Front

In a circle, if a line segment connects the center to a point on the circumference, what is it called?

Back

It is called the radius.

Front

What is the formula for the circumference of a circle in terms of diameter?

Back

The circumference (C) can be calculated using the formula C = π × Diameter.

Tags

CCSS.7.G.B.4