Answer:
The lateral area of the regular prism is 
Step-by-step explanation:
we know that
The lateral area of the regular prism is equal to

where
P is the perimeter of the base
h is the height of the prism
<em>Find the perimeter of base P</em>
-----> the regular pentagon has 5 equal sides
we have

substitute in the formula

Answer:
3x - y/2
Step-by-step explanation: