Answer:
7
Step-by-step explanation:
-8 is a negative number for example if you have -8 and you wanna get it to 0 you add 8 you don't have to do that with 7 it's a "positive" number
 
        
                    
             
        
        
        
Y =4
if you replaced y with 4 the equation would be true...
it's easy math 
- hope you have a nice day...
        
                    
             
        
        
        
A. replace pi with 3.14 and check
        
             
        
        
        
Answer:
166.27 m2
Step-by-step explanation:
area of hexagon = 
*
 where a = length of 1 side
this hexagon is made of 6 equivalent triangle 
consider ABC triangle
let AC length be x 
<em>AB = 2 * AC = 2x = a</em>

Hence a = 8 
<u>hence area of hexagon = </u>
<u>*</u>
<u> =  </u>
<u> * </u>
<u> = 166.27 m2</u>