There are 25 identical squares arranged inside the 5 by 5 square matrix. From the drawing it's evident that the length of the side of any one of the smaller squares is just 1. Thus, the perimeter of this one smaller square is P = 4(1), or 4.
The desired perimeter is 4.
1.6 is the answer. 1 lb is equal to 16 ounces, you divide 16 by 10 and you will get 1.6, each hot dog is 1.6 ounces.
For #2 it is. #4 it isn’t. #6 it isn’t.