Answer:
3.5 square cm
Step-by-step explanation:

 
        
             
        
        
        
Answer:
144°
Step-by-step explanation:
step 1
Find the measure of the central angle of the regular pentagon
Divide 360 degrees by 5 (the number of sides)

Let
c----> the center of the pentagon
we know that
m∠ECA=72°
m∠ACB=72°
therefore
m∠ECB=m∠ECA+m∠ACB
substitute the values
m∠ECB=72°+72°=144°
The measure of angle ECB is equal to the degrees that the pentagon rotate
 
        
             
        
        
        
Answer:
6.1
Step-by-step explanation:
I just know
 
        
             
        
        
        
Answer: It would be 2,0 :) Please tell me if I'm wrong
Step-by-step explanation:
 
        
             
        
        
        
Answer:
c
Step-by-step explanation:
we have to use a mean to describe the center