Question
A circular grass lawn of 35 metres in radius has a path
7 metres wide running around it on the outside. Find the cost of gravelling the path if the cost of gravelling is Rs.75 per sq.m.Solution
Area of the lawn = πr² = 22/7 × 35 × 35 = 3850 m ² Area of the lawn including path= πr² = 22/7 × 42 × 42 = 5544 m ² Area of the path = 5544m ² - 3850m ² = 1694m2 [if gte msEquation 12]>
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