Answer:
The surface area of the prism is 544 in²
Step-by-step explanation:
Given;
base of the triangular prism, b = 12 in
side length, = 10 in and 14 in
height = 8 in
The surface area is calculated as follows;
S.A = 2(area of the triangular face) + area of the rectangualr faces
S.A = 2( ¹/₂ x 12 x 8) + 2(14 x 10) + 14 x 12
S.A = (96) + 2(140) + (168)
S.A = 96 + 280 + 168
S.A = 544 in²
Therefore, the surface area is 544 in²
