Remember that
The volume of a triangular pyramid is equal to
[tex]V=\frac{1}{3}Bh[/tex]
where
B is the area of the base
h is the height of the pyramid
Group 4
[tex]\frac{1}{3}(\frac{8\cdot4}{2})\cdot9[/tex]
therefore
height of the triangle base=4 in
the base of triangle base=8 in
height of pyramid =9 in
