A rectangular lawn 75m by 60m has two roads each 4m wide running in
the middle of it, one parallel to length and the other parallel to breadth.
Find the cost of gravelling the roads at rate of Rs 14.50 per sq metre
Answers
Correct option is
A
Rs. 2358
Length of the rectangular lawn=75m
Breadth of the lawn=60m
Width of the road=4m
Area of the road(ABCD) parallel to the length of the lawn = 75m×4m
=300m
2
Area of the road(EFGH) parallel to the breadth of the lawn = 60m×4m
=240m
2
Area of the common area in both ABCD and EFGH = 4m×4m
=16m
2
Total area of both the rectangular roads = 300+240−16
=524m
2
Cost of gravelling the roads per m
2
= Rs.4.50
Cost of gravelling the roads for 524m
2
=4.50×524
=2358
Cost of gravelling the road is Rs.2358