9-6 - half to find the radius. 13 divided by 2 equals 6.5...

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Area of a Circle Lesson 9-6
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Use the Formula A = r 2 Area = pi times radius squared
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Example 8 mm A = r 2 A = (3.14)( 8 2 ) A =(3.14)(64) A = 200.96 mm 2
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Example 2 13 cm If you are given a diameter, divide it in
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Unformatted text preview: half to find the radius. 13 divided by 2 equals 6.5 cm. A = ¶ r 2 A = (3.14)(6.5 2 ) A = (3.14)(42.25) A = 132.665 cm 2 Homework Time...
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This note was uploaded on 11/17/2011 for the course MATH 110 taught by Professor Staff during the Fall '08 term at BYU.

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9-6 - half to find the radius. 13 divided by 2 equals 6.5...

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