How many triangular bases are there among 3 square pyramids and 2 pentagonal pyramids that Kala sees on her trip to egypt

1 answer

To determine the number of triangular bases among the pyramids, we need to count the number of triangular faces.

A square pyramid has 4 triangular faces (each side of the square base is connected to the top vertex).

A pentagonal pyramid has 5 triangular faces (each side of the pentagon base is connected to the top vertex).

Therefore, the total number of triangular faces among the pyramids is:

3 square pyramids * 4 triangular faces each = 12 triangular faces

2 pentagonal pyramids * 5 triangular faces each = 10 triangular faces

So, Kala sees a total of 12 + 10 = <<12+10=22>>22 triangular bases among the pyramids in Egypt.