5. A 80 m by 64 m rectangular lawn has two roads, each 5 m wide running through its middle, one parallel to its length and the other parellel to its breadth. Find the cost of gravelling the roads at 40 per m2.
Answers
Answer:
cost of gravelling two roads = 28800
cost of gravelling a first road =16000
cost of second road =12800
Explanation:
length of lawn =80m
breadth of lawn=46m
width of the road =5m
area of road with length 80=l*b
=80*5
=400m2
area of road with length 64=l*b
=64*5
=320m2
cost of gravelling first road =400*40
=16000
cost gravelling second road=320*40
=12800
COST OF GRAVELLING BOTH THE ROADS =16000+12800
= 28800Rs.