This sculpture designed by Mr. Newman’s colleague, Tia, is shaped like a hollow triangular pyramid. All 3 of the lateral faces are congruent and made of glass. How much glass was used to make the sculpture, if each face has a base length of 4 m and a slant height of 6 m?

A triangular pyramid. The triangles have a base of 4 meters and height of 6 meters.

What is the area of each of the lateral faces? m²
What is the total lateral area of the sculpture? m²