Area of Circles and Sector

What is the radius of a circle with an area of 49π?

• 49

• 10

• 7

• 14

Tags

CCSS.7.G.B.4

Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer as an exact value

• 5π/3

• 10π/3

• 10π

• 40π

Tags

CCSS.HSG.C.B.5

What is the area of the shaded region? Round to the nearest hundredth.

• 1.26

• 452.39

• 9.42

• 113.10

Tags

CCSS.HSG.C.B.5

What is the exact area of this circle?

• 1444π cm²

• 361π cm²

• 38π cm²

• 76π cm²

Tags

CCSS.7.G.B.4

A circular table top has an area of 324 square inches. Which measurement is closest to the radius of the table top in inches?

• 10.2 in.

• 18.0 in.

• 56.5 in.

• 103.1 in.

Tags

CCSS.7.G.B.4

How does the process for finding the arc length differ from the process for finding the sector area?

• The arc length is a degree while the sector area is labeled in square units.

• The arc length uses π while the sector area does not always use π.

• The arc length and sector area are always equal.

• The arc length requires using the circumference while sector area requires the circle area formula.

If Pacman's mouth, when open, is 70° and the radius of his mouth is 8mm, what is the exact area of the rest of Pacman's body?

• (464/9)π mm²

• (112/9)π mm²

• (116/9)π mm²

• (28/9)π mm²

Tags

CCSS.HSG.C.B.5