Question 1029124

What is the total surface area of the new tower?
http://imgur.com/S6CASrU 
http://imgur.com/r5jzIXv
<pre>Surface area (SA) of a cylinder: {{{2pi * r^2 + 2pi * rh}}}	

Surface area (SA) of top cylinder: {{{2pi * r^2 + 2pi * rh}}} - circular base of top(smaller cylinder), OR
{{{pi * (18/2)^2 + 2pi * (18/2) * 18 = pi * 9^2 + 2pi * 9 * 18}}} = 1,272.345025 sq inches
		
Surface area (SA) of bottom cylinder: {{{2pi * r^2 + 2pi * rh}}} - circular base of top (smaller cylinder), OR
{{{2pi * (36/2)^2 + 2pi * (36/2) * 18 - pi * (18/2)^2}}} -------> {{{2pi * 18^2 + 2pi * 18 * 18 - pi * 9^2}}} = 3817.035074 sq inches

Total surface area: 1,272.345025 + 3817.035074 = {{{highlight_green(matrix(1,3, "5,089.38", sq, inches))}}}