Radius and Diameter Relationship

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

• radius = diameter - 2

• radius = diameter + 2

• radius = diameter / 2

• radius = diameter * 2

Tags

CCSS.7.G.B.4

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

• 12 cm

• 8 cm

• 5 cm

• 3 cm

Tags

CCSS.7.G.B.4

Calculate the radius if the diameter is 14 units.

• 12

• 5

• 10

• 7

Tags

CCSS.7.G.B.4

How do you find the diameter from the radius?

• Diameter = 2 * Radius

• Diameter = Radius + 2

• Diameter = Radius - 2

• Diameter = Radius / 2

Tags

CCSS.7.G.B.4

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

• 15 cm

• 8 cm

• 3 cm

• 10 cm

Tags

CCSS.7.G.B.4

Find the diameter when the radius is 8 units.

• 10 units

• 12 units

• 20 units

• 16 units

Tags

CCSS.7.G.B.4

Explain the relationship between the radius and diameter of a circle.

• The diameter is always smaller than the radius of a circle.

• The radius and diameter of a circle are equal in length.

• The relationship between the radius and diameter of a circle is that the diameter is always twice the length of the radius.

• The diameter of a circle is half the length of the radius.

Tags

CCSS.7.G.B.4

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

• 5 cm

• 25 cm

• 10 cm

• 15 cm

Tags

CCSS.7.G.B.4

Determine the radius when the diameter is 16 units.

• 20

• 12

• 4

• 8

Tags

CCSS.7.G.B.4

Why is the radius half the value of the diameter in a circle?

• The radius is half the value of the diameter in a circle because it is a random convention

• The radius is half the value of the diameter in a circle because it is a mathematical error

• The radius is half the value of the diameter in a circle because the diameter is twice the length of the radius.

• The radius is half the value of the diameter in a circle because they are unrelated measurements

Tags

CCSS.7.G.B.4