Question

Two crossroads of width 3m run through the middle of the garden of length 100m and breadth
80m.
a) The area of the garden is ____________________.
b) The area of the crossroads is ________________________.
c) Cost of paving the roads at the rate of ₹20 per m2

is ___________.

Answer 1

Answer:

Step-by-step explanation:

The total amount required is Rs. 43,186.

Step-by-step explanation:

In the attached figure ABCD is rectangular field with 100m length and 80m breadth.

Area of the field = 100 × 80 = 8000  

width of the road is 3m.

Area of the road = (100 ×3) + (80 × 3 ) - (3 × 3)

                         = 300 + 240 - 9 = 531  

∴ Area of the garden = Area of the field - Area of the road

                                         = 8000  -  531 = 7469  

∵cost of road per   = 11  Rs.

∴total cost of road = 11 × 531 = 5841 Rs.

∵ cost of garden levelling per   = 5  Rs.

∴total cost of garden levelling = 5 × 7469 = 37,345 Rs.

∴Total amount required = 5841 + 37,345 = 43,186  Rs.