what is the length of the missing leg? if necessary, round to the nearest tenth. a = feet

what is the length of the missing leg? if necessary, round to the nearest tenth. a = feet
Answer
Explanation:
Step1: Aplicar el teorema de Pitágoras
Sea el lado hipotenusa $c = 6.8$ ft y uno de los catetos $b = 6.1$ ft. El teorema de Pitágoras es $a^{2}+b^{2}=c^{2}$, entonces $a=\sqrt{c^{2}-b^{2}}$.
Step2: Sustituir valores
$a=\sqrt{(6.8)^{2}-(6.1)^{2}}=\sqrt{46.24 - 37.21}=\sqrt{9.03}$.
Step3: Calcular y redondear
$a=\sqrt{9.03}\approx3.0$ ft.
Answer:
$3.0$