Question

a cylindrical tank has a diameter 7 M and height 9 M if the inner side of the tank has to be painted over what will it cost at rupees 35% square metre​

Answer 1

Step-by-step explanation:

Correct option is

D

Rs.9620.8

With a diameter of 7m, the circumference

=π×7=21.99m

The height =9m

Surface area =21.99×9+2×π×3.5

2

Surface area =197.91+76.97

Surface area =274.88m

2

Cost = 274.88m

2

×Rs35

Cost =Rs9620.8