Given:
Given that the triangular prism with height 10 inches.
The side lengths of the base of the triangle are 12 inches, 13 inches and 5 inches.
We need to determine the surface area of the prism.
Surface area of the prism:
The surface area of the prism can be determined using the formula,
![SA=bh+(s_1+s_2+s_3)H](https://img.qammunity.org/2021/formulas/mathematics/high-school/g8kvvj2o6pe1prhnobzozitcf8q0dnpe8k.png)
where b is the base and h is the height of the triangle.
s₁, s₂, s₃ are the side lengths of the triangle and
H is the height of the prism.
Substituting b = 12, h = 5, s₁ = 12, s₂ = 5, s₃ = 13 and H = 10 in the above formula, we get;
![SA=(12)(5)+(12+5+13)(10)](https://img.qammunity.org/2021/formulas/mathematics/high-school/i6bj279a7qxutqbyyduiufnn79zfq4wg3e.png)
![SA=60+(30)(10)](https://img.qammunity.org/2021/formulas/mathematics/high-school/2isx0pgi5ffy32z27istvs1eq60j9nywp0.png)
![SA=60+300](https://img.qammunity.org/2021/formulas/mathematics/high-school/cbsl8h162oaaqcju2ypo5axk94ft7vojyq.png)
![SA=360 \ in^2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/7v3uzrxajf2bdovbgs4qpqccrav8e5hyo3.png)
Thus, the surface area of the triangular prism is 360 square inches.
Hence, Option b is the correct answer.