A rectangular grassy lawn measuring 50m by 30m is to be surrounded
externally by a path, which is 3.5m wide. Find the cost of the leveling the path at
the rate of Rs 5 per sq. m
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Length of lawn =30m
Breadth of lawn =28m
Therefore,
Area of lawn (A
1
)=l×b=30×28=840m
2
Now,
Length of lawn including path =30+2+2=34m
Breadth of lawn including path =28+2+2=32m
Therefore,
Area of lawn including path (A
2
)=34×32=1088m
2
Therefore,
Area of path =A
2
−A
1
=1088−840=248m
2
Cost of levelling =Rs.5 per square meter
Therefore,
Cost of levelling path =5×248=Rs.1240
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