Circumference of Circles and Formulas

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

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CCSS.HSG.CO.A.1

CCSS.HSG.GMD.A.1

What two formulas can you use to find the circumference?

• C = π·d

• C = π·r²

• C = 2·π·r

• C = d²

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CCSS.HSG.GMD.A.1

Find the circumference of the circle.

• 31.4 cm

• 78.5 cm

• 314 cm

• 15.7 cm

Tags

CCSS.HSG.GMD.A.1

Find the circumference of the circle.

• 38.47 cm

• 10.99 cm

• 43.96 cm

• 21.98 cm

Tags

CCSS.HSG.GMD.A.1

Serena drew a circle with a circumference of 157 centimeters.  What is the approximate diameter of the circle she drew?

• 1.57 cm
• 15.7 cm
• 50 cm
• 25 cm

Tags

CCSS.HSA.SSE.A.1

CCSS.HSG.GMD.A.1

Find the Circumference for a Circle with a radius of 5

• 4π

• 5π

• 6π

• 8π

• 10π

Tags

CCSS.HSG.GMD.A.1

Find the Circumference for a Circle with a diameter of 5

• 4π

• 5π

• 6π

• 8π

• 10π

Tags

CCSS.HSG.GMD.A.1

You have a Circle with the Circumference of 12π what is correct about this?

• diameter = 6

• radius = 6

• diameter = 12

• radius = 12

Tags

CCSS.HSG.GMD.A.1

Find the arc length.  Leave your answer in terms of π.

• 7/4π
• 7/2π
• 1/8π
• 45π

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CCSS.HSF.TF.A.1

CCSS.HSG.C.A.2

CCSS.HSG.C.B.5

Find the arc length of the bolded arc. Give your answer in terms of π.

• (65/12)π cm

• 17.02 cm

• (845/24)π cm

• 26π cm

Tags

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5