Question

guy wire How long is a guy wire reaching from the top of a 3ft pole to a point on the ground 2 feet from the pole?

Answer 1

use the Pythagorean theorem here. c^2=a^2+b^2

Answer 2

in this case a=4 and b=2, thus:
c^2=4^2+2^2
c^2=16+4
c^2=20
take the sqrt of both sides and we get:
c=sqr20
further evluating:
c=2sqrt5

Answer 3

thus the wire is about 4.472 feet long or extacly 2sqrt5 feet long