Respuesta :

mhanifa

Answer:

  • D. 156 cm²

Step-by-step explanation:

The full surface area is:

  • S = Ph + 2B = (3 + 4 + 5)*12 + 2(1/2*3*4) = 144 + 12 = 156 cm²

Correct choice is D

Step-by-step explanation:

SA = 12(3 + 4 + 5) + 2(½ × 3 × 4)

SA = 12(12) + 2(2 × 3)

SA = 144 + 2(6)

SA = 144 + 12

SA = 156 cm²

Therefore

Surface area of prism is 156 cm². Option D

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