http://www.ck12.org Chapter 10. Perimeter and Area
Watch this video for help with the Examples above.
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/52501CK-12 Foundation: Chapter10ArcLengthB
Concept Problem Revisited
In the picture below, the top piece of pizza is if it is cut into 8 pieces. Therefore, for^18 of the pizza, one piece would
have^448 ≈ 5. 5 inchesof crust. The bottom piece of pizza is if the pizza is cut into 10 pieces. For 101 of the crust, one
piece would have^4410 ≈ 4. 4 inchesof crust.
Vocabulary
Circumferenceis the distance around a circle.Arc lengthis the length of an arc or a portion of a circle’s circumfer-
ence.
Guided Practice
Find the arc length ofPQ̂in
⊙
A. Leave your answers in terms ofπ.