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22-02-2020
Mathematics

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Find in expanded form the total surface area

Find in expanded form the total surface area class=

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22-02-2020

Answer:

38x^2 +14x -6

Step-by-step explanation:

SA = 2(LW +WH +LH)

= 2((4x +3)(x) +(x)(3x -1) +(4x +3)(3x -1))

= 2(4x^2 +3x +3x^2 -x +12x^2 +5x -3)

= 38x^2 +14x -6

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