Answer:
32 cm
Step-by-step explanation:
Let the length = L.
The width is 2L - 4.
perimeter = 2 * length + 2 * width
perimeter = 2 * L + 2 * (2L - 4)
perimeter = 2L + 4L - 8
perimeter = 6L - 8
perimeter = 100
6L - 8 = 100
6L = 108
L = 18
width = 2L - 4 = 2(18) - 4 = 36 - 4 = 32
Answer: The width is 32 cm.
