The triangular prism given here is consisting of two triangles and three rectangles
So the area of the triangular prism = area of the two triangles and the area of the three rectangles
= Surface Area ₚᵣᵢₛₘ =[2 ×1/2×8×6] m²+[3×7×10]m²
= (48+210)m²
= 258m² (ans)
