Respuesta :

Hosein

[tex] \frac{1}{3} \times \frac{1}{2} \times 9 \times 6 \times 9 = 81[/tex]

Answer:

The volume of this triangular prism is 243 cubic ft

Step-by-step explanation:

A triangular prism whose length is [tex]l[/tex] units and whose triangular cross- section has base b unit and height h units.

Then, the Volume of the triangular prism(V) in  cubic unit is given by:

[tex]V=\frac{1}{2}bhl[/tex]

In the given figure, we have the length [tex]l[/tex][tex]=9 ft[/tex] , base(b)= 6 ft

and height (h) = 9 ft

then, volume of triangular prism for the given figure is,  

[tex]V=\frac{1}{2}bhl[/tex]

or [tex]V=\frac{1}{2}\cdot 6 \cdot 9 \cdot 9[/tex] cubic ft

Simplify:

[tex]V=3\cdot 9\cdot 9 ft^3[/tex][tex]=243 ft^3[/tex]

Therefore, the volume of this triangular prism is 243 cubic ft.