I think is 35cm2 hope it will help you 
 
        
                    
             
        
        
        
Answer:
(3, 5)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The fraction of wood used for horizontal support is  .
.
Step-by-step explanation:
Assume that the total piece of wood is of length 1.
It is provided that Talia used  of the piece of wood for the base of he project.
 of the piece of wood for the base of he project.
She use  of the piece of wood for the for the vertical support.
 of the piece of wood for the for the vertical support.
The remaining wood she used for horizontal support.
The amount of wood used for horizontal support can be computed by the subtracting the amount of wood used for base of the project and vertical support form 1.
Compute the amount of wood used for horizontal support as follows:

Thus, the fraction of wood used for horizontal support is  .
.
 
        
             
        
        
        
There are 730 total boxes. The last box has 108 toys.
        
             
        
        
        
9:7
Ratios are always simplified so by dividing both 18 and 14 by 2 you get 9 and seven. Because yellow triangles is stated first the 9 is put before the 7 blue triangles.