Question 495874
I agree, the question is poorly stated.
I assume you mean the length of the pole
10^2 + x^2 = pole^2.
My answer would be the square root of 100 + (x+1) 
{{{sqrt( 100 + (x + 1)^2)}}}
This would be the length of the pole that would cause it to fall.
Anything less it should not fall.
cleomenius.