#1**+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)

ElectricPavlov Apr 10, 2016