Question

Find the surface area of the triangular prism shown below.

Answer 1

136 units²

Explanation:

The surface area (SA) is calculated as

SA = area of base + area of 2 congruent sloping faces + area of 2 triangular ends

area of base = 6 × 7 = 42 units²

area of sloping faces = 2 (7 × 5) = 2 × 35 = 70 units²

area of triangular faces = 2 ×
`(1)/(2)` × 6 × 4 = 6 × 4 = 24 units²

SA = 42 + 70 + 24 = 136 units²