Given that the circumference C of a circle with radiusr is C = 2r, explain why the area of the circle is A = ar2 in the following two ways: %3D (a) Using moving and additivity principles to create a rectangle: (b) Using moving and additivity principles to create a triangle:

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter6: Circles
Section6.3: Line And Segment Relationships In The Circle
Problem 39E: The center of a circle of radius 2 in. is at a distance of 10 in. from the center of a circle of...
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Given that the circumference C of a circle with radius r is C = 2TT, explain why the area of the circle is
A = Tr2 in the following two ways:
(a) Using moving and additivity principles to create a rectangle:
(b) Using moving and additivity principles to create a triangle:
Transcribed Image Text:Given that the circumference C of a circle with radius r is C = 2TT, explain why the area of the circle is A = Tr2 in the following two ways: (a) Using moving and additivity principles to create a rectangle: (b) Using moving and additivity principles to create a triangle:
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