Find the unknown length. i need with this i just need to make sure if x=14

I dont think you can assume that it is a square and that x = 2*7 or that the horizontal segment is equal to the vertical segment

if you just consider looking at just one of the right triangles

it has a hypothenuse of 10, a side length of 7, and a missing side length that is x/2 (lets call it s for now)

pythagorean theorem

s^2 +7^2 = 10^2

solve for s

multiply by 2

then youll get x