D.) Find the cost of Polishing a circular table of diameter 8cm, if the rate of polishing is15/m². (Take t = 3 . 14).
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Diameter of the circular table = 8cm
So, Radius = 8cm ÷2 = 4cm
We have to find the area.
So, area = πr²
= 3.14 × 4cm × 4cm
= 50.24cm²
Cost of polishing = ₹15/per m²
50.24m polishing will cost = 50.24m × ₹15
= ₹753.6
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