The width of a rectangle is 4 meters less than its length. If the area of the rectangle is 375sqm, what are the measurements of its length and width?

Answer 1

W = L-4

A = LW = L(L-4) = L^2 -4L = 375

L^2 -4L - 375 = 0

L^2 -4L + 4 = 375+4 = 379

L-2 = sqr379

L = 2 + sqr379 = about 21.47 meters long

W = 21.47-4 = about 17.47 meters wide

21.47(17.47) = 375.1