Question
Find the total surface area (in m²) of a cone, if its
slant height is 32 m and the diameter of its base is 48 m. [Use π = 22/7]Solution
According to the question Radius of the cone = 48/2 = 24 m The slant height of the cone = 32 m  Now, Total surface area of cone = πrl + πr² = (22/7 x 24 x 32) + (22/7 x 24 x 24) = (16,896/7 + 12,672/7) = 29,568/7 = 4224 m²  The total surface area of a cone is 4224 m².
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