Parts of a Circle

What is the diameter?

• 5 in
• 10 in
• 3.14 in
• 15.84 in

Tags

CCSS.7.G.B.4

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

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

• Diameter

• Circumference

• Chord

• Radius

Tags

CCSS.HSG.C.A.2

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

• Diameter

• Circumference

• Radius

• Center

Tags

CCSS.HSG.C.A.2

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

• Diameter

• Circumference

• Radius

• Center

Tags

CCSS.HSG.GMD.A.1

Which of the following is the formula for the CIRCUMFERENCE of a circle? (Select all that apply)

•  $2\pi r$  

•  $\pi d$  

•  $2\pi r^2$  

•  $\pi r^2$  

Tags

CCSS.7.G.B.4

Which of the following is the formula for the AREA of a circle?

•  $2\pi r$  

•  $\pi d$  

•  $2\pi r^2$  

•  $\pi r^2$  

Tags

CCSS.7.G.B.4

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

Tags

CCSS.HSG.GMD.A.1

Find the radius of a circle who's diameter is 40 ft.

• 40ft
• 80ft
• 20ft
• 45ft

Tags

CCSS.7.G.B.4