Published on February 4, 2008
10.3 Circumference of a Circle Objective: Find the circumference of a circle. Joseph Williams GESD firstname.lastname@example.org Image: 'Olive oil bubble variations' www.flickr.com/photos/21649179@N00/2141140776 1
What part of the circle does he draw? Image: 'tips' www.flickr.com/photos/78364563@N00/13553883 2
Circle the set of all points in a plane that are the same distance from a point called the center. Image: 'Olive oil bubble variations' www.flickr.com/photos/21649179@N00/2141150298 3
Center The point inside a circle that is the same distance from all the points on a circle. 4
Radius The distance from the center of a circle to any point on the circle. Image: 'blood orange' www.flickr.com/photos/33602849@N00/2262073 5
Diameter the distance across the circle through its center. Image: 'blood orange' www.flickr.com/photos/33602849@N00/2262073 6
Circumference the distance around a circle (the perimeter of a circle). Image: 'blood orange' www.flickr.com/photos/33602849@N00/2262073 7
pi the ratio of the circumference of a circle to its diameter. (3.14) Image: 'Pi sculpture' www.flickr.com/photos/35034351734@N01/21582841 8
Diagram of a Circle Radius Diameter Center Circumference 9
Label Each Circle Center Radius Diameter Circumference 10
Multiplying Decimals 1. Line up the numbers. 2. Multiply like you would any other number. 3. Count over for your decimal place in your answer. Image: 'Blue power3' www.flickr.com/photos/73491156@N00/391970523 11
Finding Circumference 5 C = 2 r C = 2 3.14 5 C = 31.4 12 C = d C = 3.14 12 C = 37.68 12
Title: 10'3 Circumference of a Circle 1 10.3 Circumference of a Circle 2 Finding the Circumference of a Circle Vocabulary A circle is the set of all points ...
2 Properties of Circles… Yesterday we talked about the perimeter of various 3 sided and 4 sided shapes. How do we find the perimeter of a circle? First ...
... the diameter of the roll is 10 − 3.25 = 6.75 inches. ... around the curved part is half the circumference of a circle with a diameter of 6 meters. C =
10.3 Circumference of a Circle Objective: Find the circumference of a circle. Joseph Williams GESD email@example.com Image: 'Olive oil ...
103 The Unit Circle ... The circumference of a circle of radius r is 2Πr. ... A unit circle is a circle with radius of 1 unit. For ...
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10.1 Circles and Circumference Notes C, F, ... Find the exact circumference of the circle. B C F G D E A CF = FE = ... 10.3 Arcs and Chords Notes
Geometry 10-1 Circles and Circumference ... The circumference around a circle is often represented by the letter C. ... Theorem 10-3 In a circle, ...