Answer :
Answer:
4.5 inches
Step-by-step explanation:
P = 2L + 2W
L = W + 12
P = 2L + 2W
42 = 2L + 2W
42 = 2(W + 12) + 2W
42 = 2W + 24 + 2W
42 = 4W + 24
18 = 4W
4.5 = W
Answer:
4.5 inches
Step-by-step explanation:
P = 2L + 2W
L = W + 12
P = 2L + 2W
42 = 2L + 2W
42 = 2(W + 12) + 2W
42 = 2W + 24 + 2W
42 = 4W + 24
18 = 4W
4.5 = W