Question

find the cost of polishing a circular table top of diameter 1.6 m if the rate of polishing is rupees 15 per metre to take ( pi 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