Question

A closed tank of radius 7m and height 3m is made from a metal sheet. How much metal sheet is required?

Answer 1

r=7m

h=3m

metal sheet required

=2πr(h+r)

=2×22/7×7(3+7)

=44×10

=440m^2

Answer 2

Answer:

steel required(total surface area) = πr^2h

                                                          =22/7 *7*7*3      

                                                          =462