Question

in a building there are 12 cylindrical pillar is the radius of a square is 1.4 metre and height of 6 metre. find the cost of painting the curved surface area of all the pillars at the rate of rs 9.5 per m ^2

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

C.S.A. of cylindrical =2πrh

⇒ C.S.A. of are pillar =2×

7

22

×28×4=704cm

2

⇒ C.S.A. of 24 pillars =24×704=16896cm

2

=16896×10

−4

m

2

=1.69m

2

⇒ Total cost Rs. 8×1.69=Rs.13.52

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