Area and Sector

The diameter of the circle is 8 cm. What is the area?

• 50.26 cm

• 201.06 cm

• 25.13 cm

• 16 cm

The area of a circle is 27 ft. What is the radius?

• 9 ft

• 5.86 ft

• 8.64 ft

• 2.93 ft

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 the blue shaded sector.

• 37.70 cm²

• 6.28 cm²

• 28.27 cm²

• 9.42 cm²