An oil funnel of tin sheet consists of a...

An oil funnel of tin sheet consists of a cylindrical portion 10 cm long attached to a frustum of cone. The diameters of the top and bottom of the frustum are 18 cm and 8 cm respecti8vely. If the slant height of the frustum of the cone is 13 cm, find the area of the tin required to make the funnel from the given information in the figure
`(pi=3.14)`

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The correct Answer is:

`249 pi cm^(2) `

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