Answer:
200+2w>400 and w>100.
Step-by-step explanation:
The perimeter of a rectangle can be found using 2*l + 2*w = P. If the length is 100 cm then 2(100)+2w > 400. Simplified this is 200+2w>400.
You can solve for the width and you find
200+2w>400
2w>200
w>100.