Area/Circumference Circle

If a Circle has a radius of 3 cm and a diameter of 6cm , what is the circumference of the circle? 

• 9.42 cm
• 18.84 cm

Tags

CCSS.7.G.B.4

If a circle has a diameter of 45 feet, what is its radius?

• 90 feet
• 22.5 feet
• 45 feet
• 180 feet

Tags

CCSS.7.G.B.4

The diameter of a circle is 7.5 inches. What is it's radius?

• 3.75 inches
• 15 inches
• 23.55 inches

Tags

CCSS.7.G.B.4

What is the correct formula for the Area of a Circle? 

• A= π x d
• A = π x d²
• A= π x r²

Tags

CCSS.7.G.B.4

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

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

• Radius
• Diameter

What is the circumference of this circle ?

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

Tags

CCSS.7.G.B.4

What is the circumference of this circle?  (Round to the nearest whole number)

• 88 in
• 44 in
• 116  in
• 80 inches

Tags

CCSS.7.G.B.4

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2
• 9.42 cm2
• unicorns are awsome
• 45.3 cm2

Tags

CCSS.7.G.B.4

The radius of the circle is 9 meters.  What is the circle's circumference?

• 9 meters
• 28.26 meters
• 56.52 meters
• 18 meters

Tags

CCSS.7.G.B.4