Question 575073
The lateral surface area (S) of a frustum of a right circular cone is given by:
{{{S = pi(r[1]+r[2])s}}} where: {{{r[1]}}} and {{{r[2]}}} are the radii of the top and bottom respectively and s is the slant height.
{{{S = pi(2.4+3.6)12}}} Use {{{pi = 3.14}}}} approximation.
{{{S = 3.14(6)(12)}}}
{{{S = 226.08}}}sq.ft.
The cost of polishing, at $0.60 per square foot is:
226.08($0.60) = $135.65