Unit 11 Practice

Area of a circle.

• A=πr²
• A=2πr

What is the space inside a circle?

• Circumference

• Area

• Diameter

• Radius

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Find the area of the circle

• 56.52
• 254.34
• 1017.36
• 113.04

What is the formula for sector area?

• 
• 

Find the area of the shaded sector of circle O.  The radius is 6 inches and the central angle is 100°.  Express answer to the nearest tenth of a square inch.

• 9.2 sq. in.
• 10.5 sq. in.
• 31.4 sq. in.
• 38.2 sq. in.

Find the area of each sector.

• 52.4 in²
• 18,864 in²
• 60 in2
• 10.47 in

Find the area of each sector.

• 4248 m²
• 7.9 m²
• 2827.4 m²
• 11.8 m²

What is the area of the shaded sector?

• 339.12 in²
• 113.04 in²
• 339.29 in²
• None of the above

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

• 1.26
• 452.39
• 113.10
• 40715.04