Question

To cross roads each of with 5 metre run at right angles through the centre of a rectangular park of length 70 m and breadth 45 and parallel to its sides find the area of a road

Answer 1

$\textbf{\orange{area of roads= 5*45+5*70}}$
                    = 225+350
                     = 575-25          (roads will intersect each other at a square of                           = 550m                                 side 5 hence 25 is subtracted)

cost=550*105
       = 57750 rs