Answer:
23
Step-by-step explanation:
first we flip the shape on its head so we can use pythagrean theroum so 8+15= 23squared is the hypotonuse.
x = 17
Pythagoreme Theorme:
a2 + b2 + c2
8*2 + 15*2 = c2
289 = c2
17 = c --> x
