If the altitude of a right prism is 10 cm and its base is

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If the altitude of a right prism is 10 cm and its base is an equilateral triangle of side 12 cm, then its total surface area (in cm²) is

1. (5 + 3√3)
2. 36√3
3. 360
4. 72(5 + √3)

Correct Option: D

Total surface area = Perimeter of base ×height + 2 × area of base

= 36 × 10 + 2 ×	√3	× 12 × 12
	4

= 360 + 72√3
= 72 (5 + √3) sq. cm