the length and breadth of rectangle is 3:1.A 1m wide path runs through the inside of the park has an area of 39 sq.m. Find length and breadth of the park

Answer 1

Runs thru? Do you mean at the inside boundry?
If so, areapath= 2*L*1+2W*1-fourcorners=39

2L+2W-4*1*1=39
but L=3W
6W+2W=43
W=43/8 m

L= three times that all assuming the part is just inside the boundry.