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A closed cylindrical tank of radius 1.5m...

A closed cylindrical tank of radius 1.5m and height 3m is made from a sheet of metal. How much sheet of metal is required?

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Radius of cylindrical tank `r=1.5 m`
Height of cylindrical tank `h=3 m`
Total surface area of cylindrical tank`=2pir(h+r)`
`=2times22/7times1.5(3+1.5)`
`=44/7times4.5=42.43 m^2`
`therefore` Metal sheet is required to make cylindrical tank`=42.43 m^2`
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