Area and Circumference Quiz

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

Find the radius of a circle whose diameter is 40 ft.

• 40ft

• 80ft

• 20ft

• 45ft

What is the circle's radius?

• 5 cm

• 10 cm

• 20 cm

Tags

CCSS.7.G.B.4

What is the formula for AREA of a circle?

•  $A=2\pi r$  

•  $A=\pi r^2$  

•  $A=2\pi$  

•  $A=\pi$  

Tags

CCSS.HSG.GMD.A.1

What is the formula for the CIRCUMFERENCE of a circle?

• $C=\pi r^2$

• $C=\pi r$

• $C=2\pi r$

• $C=2\pi d$

Tags

CCSS.HSG.GMD.A.1

To find pi we divide:

• Diameter/Circumference

• Circumference/Diameter

• Circumference/Radius

• Circumference/Radius

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Tags

CCSS.7.G.B.4

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

Tags

CCSS.7.G.B.4

What is the radius of a circle when the diameter is 70 m?

• 38

• 35

• 90

• 140

Tags

CCSS.7.G.B.4