13. Because it can't be divided by a whole number except 1 and itself. 14 can be Divided by 2. 21 and 33 can be divided by 3 making them composite or divisible by more than just 1 and itself :)
Some basic dimensions could be 4x1 and 3x2
Answer:
m upper 2 - m - 42
Step-by-step explanation:
9 on the side and then 3/6
