A playground is 38m 50m long and 61m 50m wide find the cost of telelling it at 40$per M2
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1. Cost of leveling:-
_______________
Length of field,l=38.50m or 38.5m
Breadth of field,b=61.50m or 61.5m
Area of rectangular field
➡ =l×b
➡ =38.5m×61.5m
➡ =2367.75m square
Cost of leveling 1 m square= RS.40
Cost of leveling 2367.75 square
➡ =Rs40×2367.75
➡ =94,710/-
2.for running 2km rounds required
➡ =2Km or 2000m/perimeter of rectangular field
➡ =2000m/2(l+b)
➡ =2000m/2(38.5m+61.5m)
➡ =2000m/2(100m)
➡ =2000m/200m
➡ =10
❥Therefore,20 rounds should be taken to rum 2km
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