What is the formula for area of a circle?

• $\pi r^2$

• $2\pi r$

• $4\pi r^2$

• $\frac{4\pi r^3}{3}$

Tags

CCSS.HSG.GMD.A.1

What information is known about this circle?

• The radius is 8

• The diameter is 8

• The radius is 16

• The diameter is 16

• The area is $64\pi$
  

Tags

CCSS.HSG.GMD.A.1

Which two circles actually the same circle?

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Tags

CCSS.HSG.C.A.1

CCSS.HSG.CO.A.1

CCSS.HSG.SRT.A.2

What is the area of the following circle?

• $121\pi$

• $484\pi$

• $242\pi$

• $11\pi$

• $22\pi$

Tags

CCSS.HSG.GMD.A.1

A circle has an area of $49\pi$  . What is the radius of the circle?

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.4

CCSS.HSA.REI.B.4

CCSS.HSG.GMD.A.1

A circle has an area of $100\pi$  . Which of the following is that circle?

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Tags

CCSS.HSG.GMD.A.1

What is the formula for sector area?

• $SA=\frac{\angle\cdot\pi r^2}{360}$

• $SA=\frac{\pi r^2}{360}$

• $SA=\angle\cdot\pi r^2$

• $SA=\pi r^2$

Tags

CCSS.HSG.C.B.5

What is the sector area?

• $12\pi$

• $13.5\pi$

• $18\pi$

• $48\pi$

• $53.3\pi$

Tags

CCSS.HSG.C.B.5

CCSS.HSG.GMD.A.1

What is the sector area?

• $12\pi$

• $13.5\pi$

• $18\pi$

• $48\pi$

• $53.3\pi$

Tags

CCSS.HSG.C.B.5

CCSS.HSG.GMD.A.1

What is the sector area?

• $12\pi$

• $13.5\pi$

• $18\pi$

• $48\pi$

• $53.3\pi$

Tags

CCSS.HSG.C.B.5

CCSS.HSG.GMD.A.1