Question

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.
​

Answer 1

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.