A sample is relative if all the types of books are included.
The answer would be:
Yes, it is representative because each type of book was represented in the approximate proportion that exists in the
library
 
        
             
        
        
        
If the side length of the pentagon is 19.27 centimeters. Then the area of the pentagon will be 337.225 square cm.
<h3>What is a polygon?</h3>
The polygon is a 2D geometry that has a finite number of sides. And all the sides of the polygon are straight lines connected to each other side by side.
The apothem of the pentagon is 7 cm. 
Then the area of the pentagon will be

The side length of the pentagon will be 

Then the area will be 

More about the polygon link is given below.
brainly.com/question/17756657
#SPJ1
 
        
             
        
        
        
Can't see the work send a Bette pic or write the question
        
                    
             
        
        
        
Answer:
30 trees
Step-by-step explanation:
Given the policy:
8 trees are cut down 48 trees will be planted 
If homeowner is going to cut down five trees on his property how many trees will be planted
Since :
8 trees cut down = 48 planted
5 trees cut down = X
Cross multiply :
8 * X = 48 * 5
8X = 240
X = 240/8
X = 30
Hence, 30 trees will need to be planted 
 
        
             
        
        
        
Im guessing either 2/3*570 or 1/3*5700