Question

1 Find the cost of polishing a circular table top of a diameter 5.6m, if the rate of polishing is Rs. 15/m^{2}​

Answer 1

Answer:

Then cost of 2.0096 m2 polishing = 15 x 2.0096 = Rs 30.14 (approx.) Thus, the cost of polishing a circular table top is Rs 30.14 (approx.)

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Answer 2

Answer:

Rs 369.15

Step-by-step explanation:

firstly r = d/2

r=5.6/2 = 2.8m

now area of circle = π x r^2

= π x 2.8 x 2.8

= 3.14 x 2.8 x 2.8

= 24.61m^2

now rate of polishing = Rs. 15m^2

rate of polishing 24.61m^2

= 15 x 24.61

= Rs. 369.15