Circumference and Area of a Circle

Find the area of the circle.

• 21.98 units²
• 153.86 units²
• 43.96 units²
• 615.44 units²

What is the area of a circle with a diameter of 10 cm ?

• 31.4 cm²
• 78.5 cm²
• 15.7 cm²
• 314 cm²

What is the circumference of a circle with a diameter of 10 cm?

• 31.4 cm
• 78.5 cm
• 62.8 cm
• 314 cm

What is the radius of this circle?

• 18
• 36
• 9
• 6

What is the diameter of this circle?

• 18
• 36
• 9
• 6

Find the circumference of the circle

• 21.98
• 153.86
• 43.96
• 615.44

What is the symbol for pi?

• #

• π

• &

• %

Tags

CCSS.HSG.GMD.A.1

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

Tags

CCSS.HSG.GMD.A.1

Which TWO formulas could you use for circumference?

• π x d

• π x r²

• 2 π r

• 3.14

what is the circumference of this circle ?

• 3.14 cm 
• 37.7 cm
• 24 cm
• 68.4 cm