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The diameter of a circle is 18x. Find the area in terms of x and π.

 Dec 12, 2018
edited by FreezingTNT  Dec 12, 2018
 #1
avatar+94526 
+2

The Radius  =  (1/2) Diameter =  (1/2)(18x) = 9x

 

Area  =   

 

pi  * (Radius)^2  =

 

pi * ( 9x)^2   =

 

pi * 81x^2 =

 

81 * pi * x^2

 

 

cool cool cool

 Dec 12, 2018

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