there is a row of two triangular pyramids, and one pentagonal pyramid in a display at a museum. How many literary faces are there altogether?

Answer 1

To find the total number of lateral faces in the display, we need to first calculate the number of lateral faces on each pyramid and then add them together.

For a triangular pyramid, there are 3 lateral faces.

For a pentagonal pyramid, there are 5 lateral faces.

Since there are two triangular pyramids and one pentagonal pyramid, the total number of lateral faces is:

2 triangular pyramids x 3 lateral faces = 6 lateral faces
1 pentagonal pyramid x 5 lateral faces = 5 lateral faces

Therefore, there are 6 + 5 = 11 lateral faces altogether in the display.