Answer: 5
Step-by-step explanation:
2w + 2L = perimeter
2w + 2(4) = 18
2w + 8 = 18
2w = 10
w = 5
Answer:
5
Step-by-step explanation:
Because the perimeter is the sum of all the sides. 4+4=8 and 18-8=10 so which one added to itself equals 10...5+5=10