Question

5. The dimensions of a rectangular plot are 35 m by 20 m. A path of uniform width 2 m is
built along the border and inside it. Find the cost of paving the path with bricks at 25 per
square metre and also the cost of covering the remaining part of the plot with grass at
3 19 per square metre.​

Answer 1

Answer:

1. Perimeter of a rectangle -2into (length and breadth)
2. 2 into20 +2
3. - 42 perimeter

Answer 2

Area of path = Area of bigger rectangle-Area of smaller rectangle

now,

dimensions of larger rectangle:

length=35m

breadth=20m

area=length×breadth=35×20=700m². -----(1)

now,

dimensions of smaller rectangle:

length=35-4=31m

breath=20-4=16

area(smaller rectangle)=length×beadth=31×16=496m². ------(2)

area of path=(700-496)m²=204m²....(from 1 and 2)

cost of paving=204×25=5100 rs.....(hope u mean the rate for each sq m of pavement is 25rs and not 25paise... plz see to it)

cost of covering rest of plot with grass=496×3.19=1582.24

now add the two costs=1582.24+5100=6882.24rs...

hope it helps!!