Answer:
The volume of the shipping box is
![V=27\ in^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/qmrvead45pspy679h4utpdk6cvej48bt8y.png)
Explanation:
see the attached figure to better understand the problem
The volume of the triangular prism is equal to
![V=BH](https://img.qammunity.org/2021/formulas/mathematics/middle-school/huc96j6g74735xn6ajzbno8f6tpvu5did6.png)
where
B is the area of the triangular base
H is the height of the prism
In this problem we have
![H=9\ in](https://img.qammunity.org/2021/formulas/mathematics/middle-school/4jukhxofz19ipgvy6zcp45r06wzwlrce9l.png)
Find the area of the triangular base B
![B=(1)/(2)bh](https://img.qammunity.org/2021/formulas/mathematics/middle-school/siaqnd3m63k4886qjeeu3rbmnupt9nf3xy.png)
we have
![b=3\ in\\h=2\ in](https://img.qammunity.org/2021/formulas/mathematics/middle-school/qjuk1enekovs46r8kk98v7zc3drgr3soz4.png)
substitute
![B=(1)/(2)(3)(2)=3\ in^2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/fl4nnzje9qe85pzbvd0k9hjnlthwml99w1.png)
Find the volume of the triangular prism
![V=BH](https://img.qammunity.org/2021/formulas/mathematics/middle-school/huc96j6g74735xn6ajzbno8f6tpvu5did6.png)
we have
![B=3\ in^2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/lii3cz5n4bhitwys3px01bs00ykzmtgr4x.png)
![H=9\ in](https://img.qammunity.org/2021/formulas/mathematics/middle-school/4jukhxofz19ipgvy6zcp45r06wzwlrce9l.png)
substitute
![V=(3)(9)=27\ in^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/q5xag6nafw3oyb89041pesl14c2tjpr9cv.png)