Resposta :
Resposta:
a) 18
Explicação passo a passo:
w = 80/z
(80/z)^2 + z^2 = 178
6400/z^2 + z^2 = 178
6400 + z^4 = 178z^2
z^4 - 178z^2 + 6400 = 0
z = 11,313
w = 80/11,313 = 7,071
wz = 11,313 * 7,071 = 80
(w-z)^2 =
(11,313-7,071)^2 =
(4,242)^2 =
18
Resposta:
a) 18
Explicação passo a passo:
w = 80/z
(80/z)^2 + z^2 = 178
6400/z^2 + z^2 = 178
6400 + z^4 = 178z^2
z^4 - 178z^2 + 6400 = 0
z = 11,313
w = 80/11,313 = 7,071
wz = 11,313 * 7,071 = 80
(w-z)^2 =
(11,313-7,071)^2 =
(4,242)^2 =
18