Circles Arc Length and 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.

What is the area of the shaded sector?

• 69.78 ft²

• 2791.11 ft²

• 558.22 ft²

• 697.78 ft²

What is the area of the shaded sector?

• 7.14 in²

• 5.23 in²

• 97.34 in²

• 15.7 in²

What is the area of the shaded sector?

• 145.31 cm²

• 20.76 cm²

• 581.25 cm²

• 470.13 cm²

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

Match the answers to the following problems.

• Problem 1

• Problem 4

• Problem 3

• Problem 2

What is the area of the shaded sector?

• 743.61 cm²

• 655.39 cm²

• 163.85 cm²

• None of the above

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π

In circle O, the radius is 4, and the measure of minor arc AB is 120 degrees. Find the length of minor arc AB to the nearest integer.

• 5

• 9

• 8

• 6

FIND THE ARC LENGTH OF THE BOLDED ARC

• A

• B

• C

• D