A cylinder vessel open at the top has a diameter of 21cm and height 16cm find the cost of tin plating it on the inside at the rate of ₹10 per hundred sq centimetres
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Answer:
r= diameter/2 = 10.5cm
T.S.A = 2* pie*r*h + pie*r^2
= 1402.5
Cost of plating= 1402.5/10 = Rupees 140.25
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