Circle Sectors and Arc Length Review

Find the arc length of the bolded arc. Give your answer in terms of π.

• (65/12)π cm

• 17.02 cm

• (845/24)π cm

• 26π cm

Find the area of the sector, rounding your answer to 1d.p.

• 176.7cm²

• 23.6cm²

• 156.7cm²

• 88.4cm²

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.

What is the area of the shaded sector?

• 339.12 in²

• 113.04 in²

• 339.29 in²

• None of the above

Find the arc length of AB. Round your answer to the nearest tenth.

• 8 units

• 4.2 units

• 8.4 units

• 16.8 units

Find the length of the arc and area of the shaded region. Round the answer to two decimal places. ( use π = 3.14 )

Length of the arc MN =

Find the length of the arc and area of the shaded region. Round the answer to two decimal places. ( use π = 3.14 )

Area of a sector =

Find the length of the arc and area of the shaded region. Round the answer to two decimal places. ( use π = 3.14 )

The diagram shows a sector of a circle of radius 4 units, formed from an angle of size 135°.

Find the length of the arc rounded to two decimal places.

Mathematical Equivalence

ON

Find the length of the arc and area of the shaded region. Round the answer to two decimal places. ( use π = 3.14 )