Question

a rectangular grassy lawn measuring 45 metre by 20 metre is to be surrounded by a path which is 3 metre wide. calculate the cost of levelling the path at the rate of rupees 2.50 per square metre.
​

Answer 1

Answer:

length(l) of lawn = 50m

   breadth(b)of lawn = 36m

   width of path = 2m

   so the,

     length(L) of outer rectangle = 50+2+2 = 54m

     breadth(B) of outer rectangle = 36+2+2 = 40m

                   

                  Area of path = Area of outer rectangle - Area of inner lawn

                                       = L×B - l×b

                                       = 54×40 - 50×36

                                       = 2160 - 1800

                                       =360m^2

                 Cost of levelling path = 360×3.25

                                                   =Rs.1170