Question

An open cylindrical tank
is 4.2 M Deep and its base radius is 84cm if the tank is made up of plastic sheets find the cost of the open tank at rs185/m^2

Answer 1

height=4.2m
base radius=84cm=84/100=0.84m
curved surface area of cylindrical tank=2πrh
=2x22/7x0.84x4.2
=11x84x3/25x5
=2772/125
=22.176sq.m
cost of 1 m.sq. sheet=Rs.185
cost of 22.176m.sq sheet=
=Rs.(22.176x185)
=Rs4102.56