Question

Find the cost of polishing a circular table-top of diameter 4m, if the rate of polishing is ₹15/m2. (Take π = 3.14).Find the cost of polishing a circular table-top of diameter 4m, if the rate of polishing is ₹15/m2. (Take π = 3.14).

Answer 1

Given diameter of table (circular) =1.6m

radius =0.8m

area of circle = πr²

=3.14×0.64=2.0096m²

 Now rate of polishing per meter square =15Rs

Cost of polishing table top = 15×2.0096

cost = 30.14m²

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