Answer :
perimeter = 2 * length + 2 * width
2 * length = perimeter - 2 * width
length = (perimeter / 2) - width
length = (34 / 2) -6.5
length = 10.5
2 * length = perimeter - 2 * width
length = (perimeter / 2) - width
length = (34 / 2) -6.5
length = 10.5