Respuesta :

Solution:

It should be noted:

  • Surface area = 2(14 x 4) + 2(14 x 3) + 2(4 x 3)

Finding the surface area.

  • Surface area = 2(14 x 4) + 2(14 x 3) + 2(4 x 3)
  • => Surface area = 2(56) + 2(42) + 2(12)
  • => Surface area = 112 + 84 + 24
  • => Surface area = 220 units²
  • L=14
  • B=3
  • H=4

Surface area

[tex]\\ \rm\Rrightarrow 2(LB+BH+LH)[/tex]

[tex]\\ \rm\Rrightarrow 2(14(3)+3(4)+14(4))[/tex]

[tex]\\ \rm\Rrightarrow 2(42+12+56)[/tex]

[tex]\\ \rm\Rrightarrow 2(110)[/tex]

[tex]\\ \rm\Rrightarrow 220[/tex]

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