What I learned in math 10 class in this week is about formulas of geometric figures using the measurements that we learned last week. How we can find the surface area of a cone is we have to find two parts, the side, and the base.
The base is π×r2 and the side is π×r×s we have to combine them. So, the formula for the surface area of a cone is πr2+πrs.
The formula for the volume of a cone is easier than the surface area, it is just similar to the volume of a cylinder. Just multiplying 1/3 on the formula for the volume of a cylinder, because the same based cylinder is 3 times by the same based cone. So, the formula for the volume of a cone is 1/3×(area of a base=πr2)×height