Question

An open cylindrical tank is 4.2 m deep and its base
radius is 84 cm. If the tank is made up of plastic sheet,
5.
find the cost of the open tank at 185 per m².​

Answer 1

CSA = 4.4 sq m, r = 0.7 m, h = ?

CSA

=

2

π

r

h

Or,

2

×

22

7

×

0.7

×

h

=

4.4

Or,

h

=

4.4

4.4

=

1

m

Answer 2

lateral surface area of a cylinder =2πrh

so. 2.22/7.4.2.0.84

gives. ~22m²

hence 22.185rs =4070rs