Answer:
1. 44; 2. 40, 3. 25
Step-by-step explanation:
The first one is just a 3,4,5 triangle scaled up by a factor of 11.
The second one is a 20,21,29 triangle, so the easiest way to find it would be to plug in the numbers (plugging in 58 as the hypotenuse works)
The last one is just a 5,12,13 triangle scaled up by a factor of 5.