Answer:
=5
Step-by-step explanation:
perimeter= 2(L)+2(W)
11 =2(1/2)+2W
11=1+2W
11-1=2W
10=2W
Both sides divided by 2
therefore The width is 5
67.2g of sugar will be needed to make 8 cake
8.4g x 8 cake
= 67.2g sugars