Question

A cylindrical pillar has a diameter of 1.4 m
and 2.5 m height. The cost of white washing
its outer surface at Rs 5 m2 is

Answer 1

Step-by-step explanation:

Answer

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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

Answer 2

I hope you understand my cancellation

hope it helps you at least a little