Answer:

Step-by-step explanation:
This triangle is a 45-45-90 triangle.
By using the image I posted, we can find x easily.
So, we have
as one of the sides.
They hypotenuse, which is x is just 
Simplify and we get x = 
All you have to do is add 51.8 +35 which will equal 55.3
Answer:
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
2 + 12 = 14 = 4 + 10