<PRE><B>Question 889707</B>
Total surface area of cylinder, {{{2pi*r^2+h*2pi*r}}}.

3 times h for the length (or height) makes the surface area {{{2pi*r^2+3h*pi*r}}}.


Do you want to know the difference or do you want to know how many times bigger is the area?

-
{{{(2pi*r^2+3h*pi*r)/(2pi*r^2+h*pi*r)}}}
{{{((pi*r)(2r+3h))/((pi*r)(2r+h))}}}
{{{highlight((2r+3h)/(2r+h))}}}----How many times bigger

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