Question 1039690
Sam packed some cookies in a right circular cylindrical can which has a radius of 5 inches and its height is 9 inches. What is the surface area of this can in terms of pi?
<pre>Surface area of cylinder: {{{highlight(matrix(1,7, 2pi*r^2 + 2*pi*rh, "=====>", 2pi*5^2 + 2*pi*5*9, "=====>", 50pi + 90pi, "=====>", highlight_green(140pi)))}}}