A closed cylindrical tank of diameter 14 m and height 5 m is made from a sheet of metal. How much sheet of metal will be required?
It is given in the question that,
Diameter of the cylindrical tank = 14 m
Radius of the cylindrical tank = 
= 7 m
Height of the cylindrical tank = 5 m
Now,
In order to find the total area of the metal sheet required we need to find the total surface area of the tank.
Hence,
Total surface area of the cylindrical tank = 
= 2 × 
= 
= 528 m2
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