A rectangular lawn, 75m by 60m, has two roads, each 4m wide, running through the middle
of the lawn, one parallel to length and other parallel to breadth. Find the cost of gravelling the
roads at Rs 5.50 per m2
Answers
Step-by-step explanation:
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
solution
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
=300m2
Area of the road(EFGH) parallel to the breadth of the lawn = 60m×4m
=240m2
Area of the common area in both ABCD and EFGH = 4m×4m
=16m2
Total area of both the rectangular roads = 300+240−16
=524m2
Cost of gravelling the roads per m2
= Rs.4.50
Cost of gravelling the roads for 524m2
=4.50×524
=2358
Cost of gravelling the road is Rs.2358
