I think it’s B
Sorry if I’m wrong
        
             
        
        
        
Answer:
4
9
2
−
5
6
−
5
6
+
6
4
Step-by-step explanation:
 
        
             
        
        
        
The answer is 9 :) hope you got it
        
             
        
        
        
Answer:
Yes
Step-by-step explanation:
Since the longest side is 6.5 cm, so let it be hypotenuse c.
Verifying by right angle formula
c^2=a^2+b^2
(6.5)^2=(3.9)^2+(5.2)^2
42.25=15.21+27.04
42.25=42.25
Hence the given triangle is a right angles triangle