<h2>If you mean :</h2>

Inverse both sides

Multiply both sides by 4




Divide both sides by 3



_____________________________________________
<h2>If u mean : </h2>

Multiply both sides by the 3


Divide both sides by 4





Answer:
The area of the regular pentagon is 
Step-by-step explanation:
we know that
The area of a regular polygon is equal to

where
P is the perimeter of the regular polygon
a is the apothem
Find the perimeter P
----> the regular pentagon has five equal sides
---> distance from center to middle of side
substitute


<D = 180 - <B - <C
<D = 180 - 83 - 42
<D = 55
answer
C. 55
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