Question 279652
the hypotenuse is the length of the wire.
20^2=(x+4)^2+x^2
400=x^2+8x+16+x^2
400=2x^2+8x+16
200=x^2+4x+8
0=x^2+4x-192
(x-12)*(x+16)=0
x=12 distance from base to wire
x+4=16 height of tower

*[invoke quadratic "x", 1, 4, -192 ]