find the value of x. help with geometry pls

Answer:
Find the value of x:-
To find Y, use Pythagorean theorem:- [tex]c^{2} =a^{2} +b^{2}[/tex]
[tex](2.1)^{2} =y^{2} +(1.4)^{2}[/tex]
[tex]2.1^{2}=4.41[/tex]
[tex]1.4^{2} =1.96[/tex]
[tex]4.41=y^{2} +1.96[/tex]
subtract 1.96 from both sides
[tex]2.45=y^{2}[/tex]
[tex]y=1.5652[/tex]
Now, to find x:-
[tex]x=y+y[/tex]
[tex]= 1.5632+1.5652[/tex]
[tex]x=3.1 \: ft[/tex]
~OAmalOHopeO