Respuesta :

Answer:

  • 84 cm²

Step-by-step explanation:

The total surface area includes:

  • The square base with side of 6 cm
  • Four triangle faces with base 6 cm and height 4 cm

The area is:

  • A = 6² + 4(1/2*6*4) = 36 + 48 = 84 cm²