What would be the cost of building a 7 metres wide garden around a circular field with diameter equal to 280 metres if the cost per sq. metre for building the garden is Rs.21?

Question

Rohan Kumar · Accepted Answer

cost = 21 * area of path = 21 * pi*(147*147-140*140) = 132594 rs

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What would be the cost of building a 7 metres wide garden around a circular field with diameter equal to 280 metres if the cost per sq. metre for building the garden is Rs.21?