a path 5m wide runs along inside a field of length 80and breadth 60 find the cost of cementing the path at the rate of rupees 5 per metre square
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actual length is 80-5=75
" breadth is 60-5=55
Area of path =Area of original rectangle - Actual rectangle
= l×b - l'×b'
= 80×60 - 75×55
= 4800 - 4125
= 675 square metre
cost of cementing per metre =5
.: = 5×625
= 1325 rupees
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