Online Surface Area Cone Tutors

Online Surface Area Cone Tutors A cone is a 3-dimensional solid figure which has a circular base and a vertex on the top of a cone. Every point on the base circle is connected to the vertex on the top and it therefore forms a curved surface around the cone. The total surface area is the sum of all the surface areas, and hence the total surface area of a cone is calculated by adding the area of the circular base and the area of its curved surface. Example 1: What is the total surface area of a cone whose radius of the circular base is 5m and the slant height of the cone is 9m? Given: radius, r = 5m Slant height of the cone, s = 9m Total Surface area of Cone, SA = * r2 + * r* s This gives: Total surface area of the cone, SA= (* 52)+ (* 5* 9) = 25+ 45 = 219.9m2 Therefore, the total surface area of the given cone is 219.9m2 Example 2: What is the total surface area of a cone whose radius of the circular base is 6m and the slant height of the cone is 10m? Given: radius, r = 6m Slant height of the cone, s = 10m Total Surface area of Cone, SA = * r2 + * r* s This gives: Total surface area of the cone, SA = (* 62) + (* 6* 10) = 36+ 60 = 301.6m2 Therefore, the total surface area of the given cone is 301.6m2