Question

a closed cylindrical tank of diameter 21 m and height 4 m is made of steel. How much area of Steel sheet is required?​

Answer 1

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Answer 2

h=4m and diameter =21m

Radius =d÷2=21÷2=1.5

curved surface area of cylinder

$= 2\pi \times h$

=2×3.14×4

=2×12.56

=25.12

:-Area of steel sheet is required 25.12m.