Answer:
hypotenuse is not a rational number
Explanation:
In a Right angled triangle , if a, b are the sides and h be the hypotenuse then relationship between them is given by 
 = 
 + 

Here,
  a= 4 in. [Given]
 b = 6 in. [Given]
Thus ,
 
 = 
 + 

 
 = 16 + 36
 
 = 52.
  h = 
 = 7.21110255......
Clearly, h is not a rational number