Answer:
Step-by-step explanation:
31,
because when you divide 42 and 12 to get the other two sides you get 3.5 and
3.5+3.5+12+12=31
Answer:
plus 4 every time
Step-by-step explanation:
1+4=5+4=9+4=13+4=17
Step-by-step explanation:
The answer will be 380 inches as of what I have done