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The area of a circular plot is `346.5 m^(2)`. Calculate the cost of fencing the plot at the rate of Rs 6 per metre |
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Answer» Area of plot `= 346.5 m^(2)` `rArr pi r^(2) = 346.5 m^(2) " " rArr r^(2) = (346.5 xx 7)/(22)` `rArr r^(2) = 110.25 " " rArr r = 10.5 m` Circumference of plot `= 2 pi r = 2 xx (22)/(7) xx 10.5 = 66 m` Cost of fencing of = Circumference `xx` Cost of fencing per metre `= Rs 66 xx 6 = Rs 396` |
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