Question

A rectangle lawn measuring 70 m by 50 m is having two cross roads 5 m wide going from its middle. One parallel to its length and other parallel to its width. Find the cost of constructing the roads at the rate of ₹ 25 per sq metre.​

Answer 1

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Area of the road parallel to the length= 70m×5m= 350m^2

Area of the road parallel to the breadth= 50m×5m=250m^2

Area of the portion of the road overlapping= 5m×5m=25m^2

Total area of the road= (350m^2 + 250m^2)- 25m^2 = 575m^2

Cost of construction= 120×575= Rs. 69,000

Answer 2

Answer:

A rectangular lawn 70 m by 50 m has two roads, each 5 m wide, running through its middle, one parallel to its length and other parallel to its breadth. ... ∴ Cost of constructing roads at Rs120 per m2=575∗120=69000 Rs.