Question

a closed cylindrical tank of radius 7 metre and height 3 metre is made from the sheet of metal how much sheet of metal is required

Answer 1

TSA of cylinder =
$2\pi \: r \: (r + \: h \: )$
= 2 × 22/7 × 7 ( 7 + 3 )
= 44 ( 10 ) = 440m^2

Hence , 440m^2 sheet of metal is required to make the cylinder.

Answer 2

Answer:

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