Answer:
2nd Option: 2sec²Ѳ
Step-by-step explanation:
Please see the attached pictures for full solution.
Answer:

Step-by-step explanation:

Object a:
perimeter is all the sides added together!
9+9=18
4.1+4.1= 8.2
18+8.2=36.2
object A’s perimeter is 36.2 CM
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object b:
7.2+3+ 3.6= 13.8
object B’s perimeter is 13.8 CM
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hope this helped! xoxo
<h2>
Answer: 8</h2>
Step-by-step explanation:

Therefore, Mel has to work at least 7.5 hours or 8 total hours.