An artist designed a metal structure in the shape of a pyramid with dimensions as shown.
A pyramid has a square base with side lengths of 12 feet, and 4 triangular sides with a base of 12 feet and height of 15 feet.
The artist decides to cover the metal structure with 1-foot square glass tiles. How many tiles will she need to cover the pyramid?
234 tiles
324 tiles
504 tiles
594 tiles