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The radius of a circular field is 140 m it is surrounded by a part of uniform width of 7m find the area of the path and the cost of Levelling it at Rs.5 per square metre |
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Answer» Answer: Step-by-step explanation: Given, radius of CIRCULAR PARK = 140 cm Area of park = πr² => 22/7×140×140 => 61600 Radius of park ALONG with path = (140+7) = 147m Area of park = πR² => 22/7×147×147 => 67914 Area of path = ( R - r ) => 67914-61600 => 6314 m² cost of levelling the path = (6314×5) = 31570 The area of path is 6315 m² and the cost of levelling the path is RS. 35170 |
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