Answer:
235.2 inches
Step-by-step explanation:
bottom triangle:
base = 12 in
height = 10.4 in
area = (1/2) (12 × 10.4) = 62.4
side triangles:
base = 12 in
height = 9.6 in
area = (1/2) (12 × 9.6) = 57.6
Surface Area:
3(57.6) + 62.4 =
172.8 + 62.4 = 235.2
