Answer :
[tex]h = 8 \ ft \\ \\b = 4 \ ft \\ \\a=8-1 = 7 \ ft \\ \\c^2 = a^2+b^2\\ \\c^2 =7^2+4^2 \\ \\c^2=49+16[/tex]
[tex]c^2=65 \\ \\ c=\sqrt{65}\\ \\c= 8.06225\approx 8.1 \ ft \\ \\Answer : \ the \ wire \ has \ a \length \ 8.1 ft[/tex]
[tex]c^2=65 \\ \\ c=\sqrt{65}\\ \\c= 8.06225\approx 8.1 \ ft \\ \\Answer : \ the \ wire \ has \ a \length \ 8.1 ft[/tex]