Question

(b) 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.
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Answer 1

here is what you want...

Answer 2

Answer:

Ra.2200

Step-by-step explanation:

Given ,diameter of drum=2m

heigth of the drum=7m

so radius =d/2

=2/2

=1m. _

Total surface area of the drum=2 / |rsq.h

=2×(22/7)×1×1×7

=44m sq.

total surface area of10 such drums

=44×10

=440msq

cost of painting 10 drums=totalsurface area of all drums×cost mpersq.

=440×5

=Rs.2200