the length of a rectangle is fixed at 23cm what lengths will make the premiter greater than 72cm
L = Length
W = Width
P = Perimeter
P = 2 L + 2 W
2 ( L + W ) = P
2 ( 23 + W ) > 72 Diwide both sides by 2
23 + W > 72 / 2
23 + W > 36
W > 36 - 23
W > 13 cm