A rectangular lawn 40m by 20m has two roads , each 5 m wide running in the middle of it , one parrallel to length and other parallel to the breadth . Find the cost of graveling the roads at rs 125 per m2
Answers
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area of the rectangular lawn=40×20
=800m²
length of one road=40m
breadth= 5m
area of one road=40×5
=200m²
length of another road=20m
breadth=5m
area of another road= 20×5
=100m²
area of the part which is repeated two times between the roads=l×b
=5×5
=25m²
area of roads = area of one road +another road-the repeated region
= 200+100-25
=275m²
cost of graveling the rods= 275×125
= rs 3,4375
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