Math, asked by nileshkumarnl828, 5 months ago

A cyndrical pillar is 1 m in diameter and 14 m in height . Find the cost of painting the curved surface area of the pillar at the rate of ₹10 per meter square. Q.10)

Answers

Answered by Anonymous

6

Step-by-step explanation:

As we know that,

CSA of cylinder =2πrh

Radius of a pillar =14cm=0.14m

Height of pillar =1m

CSA of 1 pillar =2×

7

22

×0.14×1

=44×0.02=0.88m 2

CSA of 20 pillars =0.88×20=17.6m 2

Cost of painting per meter square =Rs.10

Therefore,

Cost of painting 17.6m

2 =17.6×10=Rs.176

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