The surface area of a triangular prism is 648 square units.
What is the surface area of a triangular prism?
The surface area of a triangular prism is
= (perimeter of the base triangle × length) + (2 × base area of the triangle)
Given, the area of the base triangle is
= (1/2) × y × h square units
= (1/2) × 18 × 12 square units
= (1/2) × 216 square units
The perimeter of the base triangle is
= (x + x + y) units
= (15 + 15 + 18) units
= 48 units
Length = z = 9 units
Therefore, the surface area of the triangular prism is
= [(48 × 9) + 2 × (1/2) × 216] square units
= 648 square units
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