There is a row of two triangular prisms and one pentagonal prism in a display at a museum how many lateral faces are there all together
To find the total number of lateral faces on the prisms in the display, we need to add up the number of lateral faces on each individual prism.
A triangular prism has 3 lateral faces.
A pentagonal prism has 5 lateral faces.
Since there are two triangular prisms and one pentagonal prism, we calculate:
2 triangular prisms * 3 lateral faces per prism = 6 lateral faces for the triangular prisms
1 pentagonal prism * 5 lateral faces per prism = 5 lateral faces for the pentagonal prism
Therefore, the total number of lateral faces altogether is:
6 lateral faces for the triangular prisms + 5 lateral faces for the pentagonal prism = 11 lateral faces. Answer: \boxed{11}.