Answer:
28.5 cm²
Step-by-step explanation:
There are 7 whole diamonds and 5 half-diamonds.  Each diamond is worth three.
7x3=21
5/2x3=7.5
21+7.5=28.5
 
        
                    
             
        
        
        
Answer:
22
Step-by-step explanation:
11 x 2 = 22
 
        
                    
             
        
        
        
Answer:
   (-5/3, -4/3)
Step-by-step explanation:
   3 < 6c +13 < 5 . . . . given
   -10 < 6c < -8 . . . . . subtract 13
   -10/6 < c < -8/6 . . . divide by 6
We can express the interval using reduced fractions as ...
   (-5/3, -4/3)
 
        
             
        
        
        
If you simplify 256 you get 16 you have to square root it