Pi and Parts of Circle

Find Circumference.

• 87.92 cm

• 43.96 cm

• 21.98 cm

• 3.14 cm

Tags

CCSS.7.G.B.4

Find Circumference. Leave answer in terms of pi (π).

• 36π

• 9π

• 4.5π

• 18π

Tags

CCSS.7.G.B.4

Find Circumference. Leave answer in terms of pi (π)

• 36π

• 12π

• 6π

• 24π

Tags

CCSS.7.G.B.4

What is a straight line that goes through the center of a circle from side to opposite side?

• Diameter

• Circumference

• Radius

• Center

What is the line that goes from the center of a circle to any point on the circle?

• Diameter

• Circumference

• Chord

• Radius

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

What is the measurement around the outside of a circle called?

• Diameter

• Circumference

• Radius

• Center

Ahmed measured the diameter (d) and circumference (C) of a circle accurately to the nearest mm, with the results:

d = 113 mm
C = 355 mm

He then used his measurements to calculate a value for π correct to 7 decimal places. What value did he get?

• 3.1415926

• 3.1415927

• 3.1415928

• 3.1415929

Tags

CCSS.2.MD.A.2