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If the radius of a cone is r cm and the slant height of the cone is l cm, then find the ratio of the curved surface area of the cone to the base area of the cone?

If the radius of a cone is r cm and the slant height of the cone is l cm, then find the ratio of the curved surface area of the cone to the base area of the cone? Correct Answer l : r

Given:

The slant height of the cone = l cm

The radius of the cone = r cm

Formula:

The curved surface area of cone = πrl

The base area of cone = πr2

Calculation:

Required Ratio = πrl : πr2 = l : r

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