a rectrangle ground is 120m long and 90m broad .in
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first we find are of rectanglw equal to l×b =120×90=10800m
area of circle =2464
areo of remaining part = 10800_2464=8336
cost=8336×15=125040
area of circle =2464
areo of remaining part = 10800_2464=8336
cost=8336×15=125040
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