See the attachment..........
 
        
        
        
The length of apothem for a regular hexagon with radius of 18 cm and side of 18 cm is 15.6 cm
<h3>What is 
apothem?</h3>
The apothem of a regular polygon is a line segment from the center to the midpoint of one of its sides. 
Let a represent the length of the apothem. Hence half of the side = 18/2 = 9 cm.
Using Pythagoras:
18² = a² + 9²
The length of apothem for a regular hexagon with radius of 18 cm and side of 18 cm is 15.6 cm
Find out more on apothem at: brainly.com/question/369332
 
        
             
        
        
        
Step-by-step explanation:
This rule states that the same value can be added to both sides of an equation without interfering with the solving process of the equation 
 
        
             
        
        
        
X= 105
explanation:
45+30=75 
180-75= 105