Circles - Circumference, 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

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

What is the diameter of a circle with a radius of 5.5 cm?

• 5.5 cm
• 2.25 cm
• 11 cm
• A:LKFJ:LSKFJ

Tags

CCSS.7.G.B.4

The distance around the outside of a circle is called what?

• Perimeter

• Area

• Circumference

• Diameter

Tags

CCSS.7.G.B.4

What is the formula for the circumference of a circle?

• $2\pi d$

• $3.14\pi$

• $\pi r$

• $\pi d$

Tags

CCSS.7.G.B.4

What is the Circumference of this circle? 

(Use 3.14 for  $\pi$  )

• 452.39 cm

• 452.16 cm

• 75.36 cm

• 75.40 cm

Tags

CCSS.7.G.B.4

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.7.G.B.4

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft
• 42 ft
• 65.94 ft
• 131.95 ft

Tags

CCSS.7.G.B.4

To find the circumference of a circle, you must multiply the ________________ by 3.14.

• circumference

• area

• radius

• diameter

Tags

CCSS.7.G.B.4