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Wha is the total surface area of the tower?

 Apr 10, 2016
 #1
avatar+19797 
+5

Let's get the top and bottom surface areas first

t=pi r^2  =   pi (18^2) = 1017.876

b=pi r^2 =   pi (36^2) =4071.504    (IF we are counting the bottom)

 

the 'Middle surface area is just the difference betwen these two    4071.504 - 1017.876 = 3053.628

 

Now the sides are   pi x d x h      

Bottom  pi x 72 x 18 =4071.504

top         pi x 36 x 18 = 2035.752

 

Now add them all together: 

     2035.752 + 4071.504 + 3053.628 + 4071.504 + 1017.876 =  USE calculator

NOTE: IF BOTTOM is not cosidered part of the 'Surface Area' leave out ONE of the 4071.504 terms.

 

 

 

 

(14250.264 sq in)

 Apr 10, 2016
edited by ElectricPavlov  Apr 10, 2016
edited by ElectricPavlov  Apr 10, 2016

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