The formula for the surface area S of a cone is S = r² + rs,

Last updated: 7/12/2022

The formula for the surface area S of a cone is S = r² + rs, wherer is the radius and s is the slant height. Solve the formula for s. Justify each step. Then find the slant height of the cone when the surface area is 113 square feet and the radius is 4 feet. Approximate to the nearest tenth.