Respuesta :

Answer:

90 ft

This is because if you follow the Pythagorean Theorem

[tex]a^2 + b^2 =c^2[/tex]

[tex]54^2 + 72^2 = c^2[/tex]

[tex]8100 = c^2[/tex]

[tex]\sqrt{8100}=\sqrt{c^2}[/tex]

[tex]c = 90[/tex]

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