Just do b*h/2 for all the triangles.
        
             
        
        
        
Answer: 58.42
Formula: Multiply the length value by 2.54
23×2.54
=58.42
12 Inches = 30.48 Centimetres
 
        
                    
             
        
        
        
It is true. The triangles are congruent.
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
Given :

Multiply numerator and denominator by 2 :

 [Divide both sides by 5 as it is a common factor]
          [Divide both sides by 5 as it is a common factor]

