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A cylindrical vessel open at the top has diameter 20cm and height 14 cmfind the cost of tinplating it on the inside at the rate of Re1 per 100 square cm?
Step One. Calculate the surface area of the inside of the vessel. Assume that the thickness of the vessel is negligible.
Diameter is 20. Circumference is pi * diameter.
C = 3.14159 * 20 = 62.8318 cm
Height = 14cm.
Surface area = C * 14 = 879.6452 cm2
Step Two. Calculate the cost of tinplating the surface area
879.6452 * Re1 / 100 = Cost
Cost = 8.796452 RE
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