3. Your Turn Find the surface area of each regular pyramid. Round to the nearest tenth, if necessary. 1. 2. 8 ft. 13 in.- 6ft d 8 in. 8 in. 6 ft 6ft come. Leave your austen EXPLAIN 3 Finding the Surface Area of a Cone Read the section below and complete the following activity (adapted from Lesson 19.3). A cone is a solid that has a circular base and a single vertex. A right cone is a cone whose axis is perpendicular to the base. The surface area of a cone is calculated by adding the lateral area to the base. To calculate the lateral area of a right cone, the slant height I must be known. The slant height of a right cone is the distance from any point on circle of its base to the vertex (see figure to the right). It is not the same as the height of the cone