The lateral surface area of the triangular prism is
![379.5 sq.units](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1mu05gujy77nze4io558oq2cn0225zmdvc.png)
Step-by-step explanation:
The side lengths of the base of the triangular prism are 5 meters, 8 meters, and 10 meters.
It is given that the height of the prism is 16.5 meters.
To determine the lateral surface area of the prism, let us use the formula
![LSA=(a+b+c) h](https://img.qammunity.org/2021/formulas/mathematics/middle-school/m4pboglqsxg8y8b039cgkl573l62pdd8je.png)
where a, b,c are the side lengths of the base of the triangular prism and h is the height of the prism.
Here
and
![h=16.5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mf9v24s4li4e6cj4mhiilvfrmfj1yqw4or.png)
Substituting these values in the formula, we have,
![LSA=(5+10+8)16.5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/cm4tp0jh1vac7a0flgf0lm0eiayx43hoa3.png)
Simplifying, we get,
![LSA=(23)16.5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/gordccj8fgyh9qbqcn029zse1uavcm4gjr.png)
Multiplying, we get,
![LSA=379.5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/9kjas5z3i6tb9c5joq1nogsyqb4ja22evm.png)
Thus, the lateral surface area of the triangular prism is
![379.5 sq.units](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1mu05gujy77nze4io558oq2cn0225zmdvc.png)