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A cylindrical vessel open at the top has...

A cylindrical vessel open at the top has a dimeter 20 cm and height 14 cm. Find the cost of tin-plating it on the inside at the rate of 70 paise per `100 cm^2`.

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MBD-Surface Areas and Volumes-Exercise
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  14. For a right circular cone, slant height = 10 cm, radius of base = 5 cm...

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