You can
put this solution on YOUR website!WHAT YOU HAVE IS A RIGHT TRIANGLE WITH ONE SIDE (HEIGHT)=8 FT.
THE OTHER SIDE IS 1/2 THE BASE (1/2*12=6 FEET) FOR THE OTHER SIDE.
NOW YOU NEED TO FIND THE HYPOTENUSE OF THIS TRIANGLE USING;
A^2+B^2=C^2
8^2+6^2=C^2
64+36=C^2
100=C^2
C=SQRT100
X=10 FT. FOR THE LENGTH OF THE PIPE FOR THIS TEEPEE.