a rectangular lawn 70 m by 50 m has two crossroads each 5m wide running through its middle , one parallel to its length and other parallel to its breadth . find the cost of constructing the roads at rupees 20 per m²
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Answer:
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ANSWER = RS. 11 , 500
Step-by-step explanation:
Area of road parallel to the length = 70m × 5m
= 350m^2
Area of road parallel to the breadth = 50m × 5m
= 250m^2
Area of portion of road overlapping = 5m × 5m
= 25m^2
Total area of the road = ( 350m^2 + 250m^2 ) - 25m^2
= 600m^2 - 25m^2
= 575m^2
Cost of constructing the road per m^2 = Rs. 20
Cost of constructing the road 575 m^2 = 20 × 575
= Rs.11,500
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