Jane wishes to build a birdfeeder in the shape of a triangular prism that can contain 2 bags of nyjer seeds. Nyjer seeds sell in bags of 275 cm³.

a. What dimensions of the birdfeeder will minimize the amount of materials Jane will need in order to hold 2 bags of the birdfeed at once?

b. Jane plans to use wood for the triangular base and top of the birdfeeder, and aluminium for its sides. How much of each material will she need to build this birdfeeder?