A closed cylindrical tank of radius 21 m and height 4m is made from a sheet
of metal. How much sheet of metal is required? Also find its volume.
.
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Answer
Given diameter of cylinderical tank =21m.
height of cylinderical tank =4m.
now TSA of tank =2πr(h+r)
=2×3.14×21(4+
2
21
)
=21×3.14×
2
29
total steel sheet required to make tank is =956.13m
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