Question

find the cost of polishing a circular table top of diameter 1.6m if the rate of polishing is $15 per m2​

Answer 1

Answer:

30.14 dollars

Step-by-step explanation:

Diameter = 1.6m

Radius = 0.8m

Area of the table = πr²

⇒3.14*0.8*0.8

⇒2.0096 m² approx

Cost = 15* area of table

⇒15*2.0096

⇒ 30.14 dollars

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Answer 2

Step-by-step explanation:

diameter= 1.6 m

radius = 1.6/2 m

= 0.8

area to be painted = πr^

22/7 x 0.8 x 0.8

22/7 x 8/10 x 8/10

area to be painted = 352/175 or 2.011 m

cost of polishing 1 m^2 = $15

cost of polishing 2.011 m = $15 x 2.011 m

= $ 30.165