Question

solve this question❓​

Answer 1

Answer:

₹198

Step-by-step explanation:

d=1, h=4.2, r=1/2

CSA=?

CSA of a cylinder pillar =2πrh

=2×22/7×1/2×4.2

=22×0.6

=13.2m.sq

the cost of white washing

of the curved pillar. =15×13.2

=₹198.0

Answer 2

Answer:

₹198

Step-by-step explanation:

Diameter=1

So, radius would half of 1 that is=1/2

Height=4.2m

CSA=?

Now

As we know that CSA=2*PIE*r*h(pie will be 22/7)

So 2*22/7*1/2*4.2

So, CSA is 13.2m

Now white wash cost =₹15

So total cost=15*13.2

=₹198

Hence prove

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