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If the volume of a cone is 133pi units^3, and the height is 12/7, what is the diameter of the base of the cone. 

 Feb 10, 2022
 #1
avatar+122390 
+2

Formula for  volume of cone

 

V =  (1/3) p * r^2 * h

 

So

 

133 pi  =  (1/3) pi * r^2 * (12/7)     ....divide out pi

 

133  =  (1/3) (12/7) * r^2

 

133 = (4/7) r^2

 

(133) ( 7/4)  = r^2

 

232.75  = r^2  ......take the sqrt

 

15.26  = r

 

Double this to find the diameter  ≈   30.52

 

cool cool cool

 Feb 10, 2022
 #2
avatar+7 
-1

Thank you Cphill! :)

ineedhelppleasse  Feb 10, 2022
 #3
avatar+122390 
0

No prob  !!!

 

 

cool cool cool

CPhill  Feb 10, 2022

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