Question 171882
use the pathaorean theorem using the highth as one of the legs and the diagonal of the face as the other leg.......the distance your looking for is the hypothenuse.  lets call the distance we are looking for D
:
first find the diagonal(C) length of the face . {{{25^2+36^2=C^2}}}
:
{{{C^2=1921}}}........{{{C=sqrt(1921)}}}

{{{12^2+sqrt(1921)=D^2}}}
:
{{{highlight(D=sqrt(2065)=45.44)}}}cm