Question
The curved surface area of a cone is 2013.6 cm² and its
radius is 12 cm. Determine the height.Solution
Let slant height of the cone be ‘l’ cm
So, (22/7) × 12 × l = 2013.6
Or, l = 49 cm
So, height of the cone (h) = √{49² – 12²} = 47 cm
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