# how to find surface area of a cone in terms of pi

Asked Jul 17, 2012, 04:11 AM — 2 Answers
I am struggling to find out how to find the surface area of a cone giving all answers in terms of pi ...radius is 8 and slant height is 12... Please help?!

 Unknown008 Posts: 8,147, Reputation: 3745 Uber Member #2 Jul 17, 2012, 05:38 AM
Do you know the formula for the surface area of a cone?
 ebaines Posts: 10,033, Reputation: 5529 Expert #3 Jul 17, 2012, 05:43 AM
Given the radius of the base =R and the slant length S: the area of the slanted side of the cone is $\pi R S$ and the area of the base is $\pi R^2$. The total surface area is the sum of these.