Yes, we can see each triangle has congruent angle, side, angle, respectively (SAD). When two triangles have these correlating congruences, they can be determined as congruent.
Answer - 150
One square has an area of 25 (5x5) so 6 squares (25x6) have an area of 150.
B, 224in2
It may get tedious but just find the area of each face and write them down