a cylinder vessel open at the top has a diameter of 21 cm and height 16 cm find the cost of tin plating it on the inside the rate of property in per hundred square centimeteres.
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Step-by-step explanation:
Area of the bottom of the cylindrical vessel=π*r*r=22/7*21/2*21/2=363 square cm
Perimeter of the cylindrical vessel=2πr=2*22/7*21=132 cm
Area of the rectangular sheet=lb=132*16=2112 square cm
Total area of the sheet=363+2112=2475 square cm
Cost of tinplating=Rs 10 per square cm
Total cost of tinplating=2475*10=Rs 24750/-
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