Problema Solution
the perimeter of a rectangular field is 80 metres.If the length of the field is decreased by 2 metres and the breadth is increased by 2 metres, the area is increased by 36sq.m. find the length and breadth of the rectangular field?
Answer provided by our tutors
primeter = 2(L+W) = 80
L+W = 80
(L-2)(W+2) =LW+2L-2W-4
SO 2L-2W-4 = 36
2L-2W = 40
L -W = 20
SOLVING TWO EQNS WE GET L = 30 W = 10