Question

cylindrical piller has a diameter of 56 cm and is of 35 m high. There are 16 pillars
around the building. Find the cost of painting the curved surface area of all the pillars at
the rate of 5.50 per 1 m².​

Answer 1

Answer:

Given a cylindrical pillar diameter of 56cm and its height is35m.

Then radius of pillar =

2

56

cm=

100

28

m=0.28m

Then curved surface area of pillar =2πrh=2×

7

22

×0.28×35=61.60m

2

Then the curved surface area of 16 pillars =61.60×16=985.60m

2

Given the cost of painting the curved surface area of all pillar at the rate of Rs5.50 per 1sqm

Then the cost of paining of 16 pillars =985.60×5.50=5420.80 Rs

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