A square field has a side 150m long. There is a road 5m wide all around the park outside it.Find the cost of constructing the road at rs 250 per sq metre.
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area of the road =area of square field along with road - area of square field
area of the road = 160×160 -150×150
area of the road = 25600 - 22500
area of the road = 3100 sq metre
cost of constructing the road = 3100× 250
cost of constructing the road =₹ 775000
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