Question

Find the cost of polishing a circular table-top of circumference 2.8m, if the rate of polishing is Rs $25/m^2 . (Take π = 3.14)

Answer 1

Answer:

$15.6051

Step-by-step explanation:

Let the radius be r

Then,2πr=2.8

Or,2×3.14.r=2.8

Or,r=0.4458599

Area=πr^2=3.14×0.4458599×0.4458599=0.6242069m^2

Cost=25×0.6242069=$15.6051

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