Question 792384
length = 3w
p = 2w + 2L
2w + 2(3w) = 248
2w + 6w = 248
8w = 248
8w/8 = 248/8
w = 31

check:
2(31) + 2(3(31)) = 248
62 + 2(93) = 248
62 + 186 = 248
248 = 248