Question

in a building there are 4 cylinderical pillars. the radius of each pillar is 14cm and height is 4m find the total cost of painting the curved surface area for all pillars at the rate of rs 8 per m(square)​

Answer 1

Answer:

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Answer 2

Answer:

∵r=28cm=0.28mh=4m

curved surface area of a cylindrical pillars is given as;

CSA=2πrh

=2.722.0.28.4

=7.04m2

cost of painting the CSA of each pillar=8×7.04=Rs56.32

therefore total cost of painting 48 pillars=48×56.32=Rs2703.36