Question

An oil drum is in the shape of cylinder, whose diameter is 2 m. and height
is 7 m. The painter charges 5 per m2 to paint the drum. Find the total
charges to be paid to the painter for 10 drums.
​

Answer 1

Answer:

=Rs15057(app.)

Step-by-step explanation:

We have

Diameter=2m

So, radius =1m

and, Height =7m

Now,

Total surface area of one drum is =2πr(r+h)

=2×

7

22

×1(7+1)

=2×

7

22

×8=

7

352

m

2

Now,

Total cost to be paid to the painter of 10 drums=

7

352

×10×3

=Rs15057

Hope it helps (◕ᴗ◕✿)