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DENIUS [597]
3 years ago
13

Find the perimeter of the figure below. A) 42.1 B) 74.0 C) 84.2 D) 94.4

Mathematics
2 answers:
Andru [333]3 years ago
6 0
The answer is C 84.2
8090 [49]3 years ago
4 0
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
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