What is the surface area of the triangular prism, in square inches?

Answer:
537 in²
Step-by-step explanation:
11.4 x 15 = 171
2(7 x 9) = 126
7 x 15 = 105
9 x 15 = 135
171 + 126 + 105 + 135 = 537
Answer:
474 sq. inches
Step-by-step explanation:
15 x (7+9+11.4) = 411
2x 1/2 x 7 x 9 = 63
= 474