Question

Find the cost of polishing a circular table top of diameter 14m if the rate of polishing is rs 15 per m2 ( take π = 22/7 ) answer with this no.s omly plz.......................................

Answer 1

Area of circular table top= πr*

=22/7×7×7

=22×7

=154

Cost of polishing table top= 154×15

=₹2,310

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Answer 2

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Given❇

Diameter = 14m

Radius = 7m

Cost of polishing 1 sq m = Rs.15

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Find❇

Cost of polishing the table = ?

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Solution❇

Area of circle = $\pi × {r}^{2}$arr

Putting values,

= $\frac{22}{7} × {7}^{2}$

= $\frac{22}{7} × 49$

= $22×7$

= 154 Sq m

Cost of polishing 1 sq m = Rs.15

Cost of polishing 154 sq m

= Rs.15 × 154

= Rs.2310

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