Answer:16
a
8
9
c
9
Step-by-step explanation:

all you have to do next is add all of them in one equation and equate them to 18
when you find x, replace in each expression to get your answers
Answer:
20 square units
Step-by-step explanation:
Area of a parallelogram is calculated with the following formula:
b*h (b: base, h: height)
5*4 = 20 square units