Answer:
The reasonings I provided are just examples (they are true, though!). Hope this helps!
The formula for solving perimeter of a parallelogram is P=2(a+b) where "a" is for the altitude and "b" for the base. From the give figure, we can determine both a and b values as enumerated below,
a=5
b=4
We can solve for P as shown below,
P=2(5+4)
P=18 unit.
Therefore, the perimeter is equal to 18.
I hope this helps, have a great day, and God bless.
Brainliest is always appreciated :)
Answer:
The required product is 
Step-by-step explanation:
Consider the provided expression.

Open the parentheses.



Add the like terms.

Hence, the required product is 
-2a+4 because you have to distribute