Question

Can someone please help me with number 5

Answer 1

the wire is attached about 12.12 feet above the ground

Explanation:

Notice that you have a right angle triangle formed by the wall, the ground (which are perpendicular to each other - intersect at a right angle) and the wire (the wire is the hypotenuse of the right angle triangle).

Therefore, according to Pythagoras Theorem:

`hyp^2\,=\,leg_1^2+leg_2^2\\14^2=7^2+x^2\\x^2=14^2-7^2\\x^2=196-49\\x^2=147\\x=√(147) \\\\x\approx 12.12`

Therefore the wire is attached about 12.12 feet above the ground.