Question

the floor of a rectangular hall has perimeter 300m . it's height is 6m . find length and breadth

Answer 1

p = 2(l + b)                   l = 6m    &   p = 300m
300 = 2 ( 6 + b)
150 = 6 + b
b = 150 - 6
   =  144 m

Answer 2

2(l*b)=300m
If l is 6 m then b is 25 m.