Question

a rectangular lawn is 60m by 40m and his two roads each 5m wide running in the middle of it one parallelto its length and other parallel to its breadth . Find the cost of constructing the roads at rupees 80 per metersquare​

Answer 1

Answer:

Step-by-step explanation:

The length of the rectangular lawn is given as 60m and breadth is given as 40 m.

The road is to be constructed in the middle of the lawn 5 m wide .

Now we have to find the cost of constructing the road in the middle of the lawn.

Area of the road is area of both rectangles formed in the center - area of the square at the center.

Area of road = Sum of Area of rectangles formed at centre - area of square at center

Area of road = (60 × 5) + (40 × 5) - (5 × 5)

Area of road = 300 + 200 - 25 = 475 sq. m

Now cost of constructing the road per sq. m = Rs. 75 per sq. m

Now cost of constructing the total road = 75 × 475 = Rs. 35625

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Answer 2

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