Length and width. Planes are two dimensional.
You find the scale factor as they are similar
2 of the same sides on both triangles are given
so 49/28 = 1.75
if the bottom of triangle 1 is 91 then you must divide 91/1.75 to give the length of the second triangle
= 52in.
i hope this can help you.
POH is the -log [ OH- ]. Using this equation, simply find the -log of the OH- concentration to find the pOH:
pOH = - log ( 0.000086 ) = 4.07