Cindy has 42 meters of fencing. she
plans to fence in a rectangular dog run
that is 6 meters wide.
[remember, the formula for the
perimeter of a rectangle (the distance
around) is p = 2l + 2w, where l-
length and w = width.]

i dont know nkw

step-by-step explanation:

kenffledkedncklzkdfeserw

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

step-by-step explanation: