Geometry

Question Analysis:
This question targets prism lateral surface area from triangle base sides.
The main focus is computing rectangular face areas from all triangle sides.

Key Concept Explanation:
Each side of the triangle forms one rectangle:
Lateral Area = (5 + 5 + 6) × 12

Step-by-Step Solution:
Perimeter of triangle base = 5 + 5 + 6 = 16
Lateral Area = 16 × 12 = 192 cm²

Common Mistakes:
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