Length (L): L
width (w): (2/3)L
Perimeter (P) = 2L + 2w
        290 = 2(L) + 2(2/3)(L)
        870 = 6L + 4L
        870 = 10L
        87 = L
width (w): (2/3)L Â = (2/3)(87) Â = 2(29) Â = 58
Answer: width = 58 ft, length = 87 ft