[tex](6.5 {)}^{2} = (2.5 {)}^{2} + {x}^{2} \\ 42.25 = 6.25 + {x}^{2} \\ {x}^{2} = 36 \\ x = \sqrt{36} \\ x = 6m[/tex]
[tex]6 + 0.4 = 6.4m[/tex]
Wysokość masztu wynosi 6,4m
