Angles, Arc Length, and

Sector AreaLESSON 10.1

UNIT 6 WB PAGE 94 AND 106

1

2

3

4

5

6

7

8

9

Example 3 (Page 96)

A circle has a radius of 4 units. Find the radian measure of a

central angle that intercepts an arc of length 10.8 units. Use a

calculator for the finished answer.

10

Example 4

A circle has a radius of 3.8 units. Find the length of an arc

intercepted by a central angle measuring 2.1 radians. Use a

calculator for the finished answer.

11

Example 5

A circle has a diameter of 20 feet. Find the length of an arc

intercepted by a central angle measuring 36º. 12

Page 106

13

14

15

Example 1 (Page 107)

A circle has a radius of 24 units. Find the area of a sector with a

central angle of 30º. Use a calculator for the finished answer.16

Example 3

A circle has a radius of 6 units. Find the area of a sector with an

arc length of 9 units. 17

ExampleA blueberry pie is made in a 8

1

2-inch diameter pie pan.

The pie is cut into 8 equal slices. What is the area of 1 slice? Use a calculator for the finished answer.

18

Assignment 10.5

Packet Problems # 1 – 18

Page 99 # 1 – 6 (use your calculator to finish 4 and 6)

Page 109 # 1 – 5, 7 – 10 (use your calculator to finish #1, 3, 8 – 10)

19