Circle Circumference & Area

What is the formula for finding the CIRCUMFERENCE of a circle?

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• 

Tags

CCSS.7.G.B.4

What is the formula for finding the AREA of a circle?

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• 

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 radius of this circle?

• 18in
• 36in
• 9in
• 8in

Tags

CCSS.7.G.B.4

What is the diameter?

• 8cm
• 16cm
• 10cm
• 4cm

Tags

CCSS.7.G.B.4

If r = 4, d = ?

• 4

• 2

• 8

• 8π

Tags

CCSS.7.G.B.4

If the diameter of a circle is 4, what is the radius?

• 4

• 2π

• 4π

• 2

Tags

CCSS.7.G.B.4

Find the circumference of the circle in the image.

• 10π

• 20π

• 100π

• 20

Tags

CCSS.7.G.B.4

What is the area of the circle in the image?

• 10

• 20π

• 100

• 100π

Tags

CCSS.7.G.B.4

What does π equal?

• 3

• 3.14

• 3.2

• 21/7

Tags

CCSS.HSG.GMD.A.1