A rectangular grassy plot 110 m by 65 m has a gravel path 2 5 m wide all round it

gravelling is done 2.5m wide on all the sides of the rectangular plot. If we want to find the area excluding gravelled part the dimensions of the rectangle with ungravelled part would be length = (110-(2.5+2.5))= 105 [because if you consider any length or breadth of plot, we excluded gravelled part that was present at every side of the plot and it had the width = 2.5m on evry side and it comes twice for either length or breadth ].similarly, bredth = (65-(2.5+2.5))=60
area of the plot=110m*65m=7150sq.m
area of plot excluding gravel=105m*60m=6300sq.m
area of gravel =7150sq.m-6300sq.m =850sq.m
cost of gravelling the path= 850sq.m*80 = 68000p =68000/100=Rs680
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area of plot=110*65=7150
area excluding the gravel=105*60=6300
area of gravel=850
cost=850*80=6800p=Rs680
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105 comes from 110-(2.5+2.5)
60 comes from 65-(2.5+2.5)
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area=(110*65-105*60)
cost=area*80
680
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can u please explain 105m @Ankith kumar
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A rectangular grassy plot 110 m. by 65 m has a gravel path 2.5 m wide all round it on the inside. Find the cost of gravelling the path at 80 paise per sq. metre