Circumference and Radius/Diameter Quiz

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

• radius = circumference - π

• radius = circumference / (2 * π)

• radius = circumference * π

• radius = circumference + π

Tags

CCSS.7.G.B.4

If the circumference of a circle is 20π, what is the radius?

• 5

• 10

• 15

• 25

Tags

CCSS.7.G.B.4

How do you calculate the diameter from the circumference of a circle?

• diameter = circumference / π

• diameter = circumference - π

• diameter = circumference * π

• diameter = circumference + π

Tags

CCSS.7.G.B.4

If the circumference of a circle is 30π, what is the diameter?

• 30

• 25

• 20

• 15

Tags

CCSS.7.G.B.4

Solve for the radius if the circumference of a circle is 25π.

• 6.5

• 15

• 20

• 12.5

Tags

CCSS.7.G.B.4

If the circumference of a circle is 18π, what is the radius?

• 6

• 12

• 15

• 9

Tags

CCSS.7.G.B.4

What is the method to solve for the diameter using the circumference of a circle?

• diameter = circumference * π

• diameter = 2 * circumference

• diameter = circumference - π

• diameter = circumference / π

Tags

CCSS.7.G.B.4

If the circumference of a circle is 36π, what is the diameter?

• 12

• 30

• 18

• 24

Tags

CCSS.7.G.B.4

Calculate the radius if the circumference of a circle is 22π.

• 44

• 11

• 7

• 15

Tags

CCSS.7.G.B.4

If the circumference of a circle is 24π, what is the diameter?

• 36

• 48

• 12

• 24

Tags

CCSS.7.G.B.4