Find the perimeter of the figure below.

a) 42.1
b) 74.0
c) 84.2
d) 94.4

First, we have to find a. Find two congruent sides.

2a-20.4=a+1.6

Add 20.4 to the other side.

2a= a +22

Subtract a from both sides.

a= 22

Now, plug it into every equation and then add the values all together for the perimeter.

18.5

22+1.6= 23.6

22-3.5= 18.5

I already know the last one will be 23.6 since the parallelogram has 2 sets of equal sides.

18.5(2)+23.6(2)= 84.2

84.2 is the perimeter.

I hope this helps!
~kaikers

$5 per ticket

Step-by-step explanation:

25/5 = 5