Question

Find the cost of polishing a circular table-top of diameter 1.8 m, if the rate of polishing is Rs 20/ m2 . (Take π =3.14 )

diameter is 1.8 please check your answer diameter​​

Answer 1

Answer::

Given diameter of table (circular) =1.6m

radius =0.8m

area of circle = πr^2

=3.14×0.64=2.0096m^2

Now rate of polishing per meter square =15Rs

Cost of polishing table top = 15×2.0096

cost = 30.14m^2