Q12 of 62 Page 22

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.

Given,


Diameter of base of cylinder = 20 cm


Radius of cylinder =


Height of cylinder = 14 cm


Total surface area of cylinder =


∴ Cost of tin painting it inside at rate 50 paise per cm2 =


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