Question 459617
Ladder length=	5m		
Distance from wall=	1.8m		
Height ladder reaches on wall x 	m		
						
By Pythagoras theorem 						
Hypotenuse^2 = Leg1^2+leg2^2						
5^2-1.8^2=x^2
25-3.24	=x^2		
21.76=x^2				
{{{ sqrt(x^2)=sqrt(21.76	)}}}		
x=	4.66	m