Question

find the cost of polishing a circular table top diameter is 2.1 m if the rate of polishing is rupees 10 per m2

Answer 1

Answer:

Step-by-step explanation:

d= 2.1 m

r=  2.1/2 m

area of polishing = π r squared

                            = 22/7 x 21/20 x 21/20

                            = [11 x 63]/ 200

                            = 693/200

                            = 3.46 m squared

cost of polishing = 10 x 3.46

                           = 34.6=35

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