Answer:
![346.5 cm^3](https://img.qammunity.org/2021/formulas/mathematics/college/zihi1vp0nm7y36baim1migiif1fgbmz3ql.png)
Explanation:
Length of triangular prism,l=11 cm
Width of triangular prism,b=7 cm
Height of triangular prism=9 cm
We have to find the volume of triangular prism
Volume of triangular prism=
![Al](https://img.qammunity.org/2021/formulas/mathematics/college/56xkrr3ji7n53pxcelmlg8fm1t67o91olv.png)
Where A=
=Area of base
l=Length of triangular prism
Area of base=
![(1)/(2)* 7* 9](https://img.qammunity.org/2021/formulas/mathematics/college/jhrmo4op3t8xc7c4qkqml8o6iqg9f11qxo.png)
Area of base
![=(63)/(2) cm^2](https://img.qammunity.org/2021/formulas/mathematics/college/nl9ylhxjwjfcj1i2rhtyq9le3of3w7vxpd.png)
Substitute the values then we get
Volume of given triangular prism=
![(63)/(2)* 11](https://img.qammunity.org/2021/formulas/mathematics/college/wnrysf3qh555efylg38dob53dhthc2bwlg.png)
Volume of given triangular prism=
![346.5 cm^3](https://img.qammunity.org/2021/formulas/mathematics/college/zihi1vp0nm7y36baim1migiif1fgbmz3ql.png)