Geometry

Question Analysis:
This question asks for total surface area using both base area and perimeter.
The main focus is combining base area and lateral area into one total.

Key Concept Explanation:
Total surface area = 2 × base area + lateral area
Lateral area = perimeter of base × prism height

Step-by-Step Solution:
Base area = 30
Perimeter = 24
Height = 12
Lateral area = 24 × 12 = 288
Total surface area = 2 × 30 + 288 = 60 + 288 = 348
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