19. A cylindrical vessel open at the top has diameter 20 cm and height 14 cm. Find the cost of tin-
plating it on the i

19. A cylindrical vessel open at the top has diameter 20 cm and height 14 cm. Find the cost of tin-
plating it on the inside at the rate of 50 paise per hundred square centimetre.

elements of mathematics class 8​

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