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An oil funnel made of tin sheet consists of a 10 cm Jong cylindrical portion attached to a frustum of a cone. If the total height is 22 cm, diameter of the cylindrical portion is 8 cm and the diameter of the top of the funnel is 18 cm, find the area of the tin sheet required to make the funnel (see Fig. 13.25).

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NCERT Solution for Class 10 Maths Chapter 1,2,13,14

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