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Learn how to calculate the surface area of a cone using easy formulas, step-by-step guides, and solved examples for exams. Get clear on curved and total area with instant tips. Learn how to calculate the surface area of a cone using the formula πr2 + πrs, where r is the radius and s is the slant height. See the derivation, solved examples, and diagrams of a cone . Learn how to calculate the total surface area and the curved surface area of a cone using formulas and examples. Find the slant height of a cone given the radius and the total surface area . Cone is a three-dimensional structure having a circular base where a set of line segments, connect all of the points on the base to a common point called apex. A cone can be seen as a set of non-congruent circular discs that are stacked on one another such that ratio of the radius of adjacent discs remains constant. You can think of a cone as a triangle which is being rotated about one of its vertices. There is a predefined set of formulas for the calculation of curved surface area and total ...