Circumference and Area Challenge

What is the formula to calculate the circumference of a circle?

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CCSS.HSG.GMD.A.1

CCSS.HSG.C.B.5

If the radius of a circle is 5 cm, what is its circumference?

• 15π cm

• 20π cm

• 10π cm

• 25π cm

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CCSS.HSG.GMD.A.1

What is the formula to calculate the area of a circle?

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CCSS.HSG.GMD.A.1

If the radius of a circle is 3.5 cm, what is its area in square centimeters?

• 38.49

• 10.99

• 21.99

• 12.25

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CCSS.HSG.GMD.A.1

What is the circumference of a circle with a diameter of 12 cm?

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CCSS.HSG.GMD.A.1

What is the area of a circle with a radius of 8.2 cm?

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CCSS.HSG.GMD.A.1

• 2.25 cm

• 5 cm

• 4.5 cm

• 9 cm

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CCSS.HSG.GMD.A.1

If the area of a circle is 153.86 cm², what is its radius? (Use 3.14 for Pi)

• 7

• 9

• 11

• 14

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CCSS.HSG.GMD.A.1

What is the circumference of a circle with an area of 78.5 cm²? (Use 3.14 for Pi)

• 31.4 cm

• 47.2 cm

• 62.8 cm

• 15.4 cm

Tags

CCSS.HSG.GMD.A.1

Tags

CCSS.HSG.GMD.A.1