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please help 7th grade math question? URGENT! awarding brainliest!


Given a rectangular prism with width and height = 6x and length = 12x-9. The expression for the surface area of the rectangular prism shown in the picture is 2[(6x)(6x)]+4[(12x - 9)(6x)]. Simplify this expression.


36x + 72x – 54


72x2 + 288x2 – 216x


36x272x2 - 54x


72x + 288x – 216

please help 7th grade math question URGENT awarding brainliestGiven a rectangular prism with width and height 6x and length 12x9 The expression for the surface class=

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kkribble

Answer:

im pretty sure its A

Step-by-step explanation:

The surface area of the given rectangular prism is 360x²-216x.

Given that, width=6x, height = 6x and length = 12x-9.

What is the formula to find the surface area of the rectangular prism?

The formula to find the surface area of the rectangular prism is A=2(wl+hl+hw).

Now, 2[(6x×(12x-9)+6x×(12x-9)+6x×6x].

=2(72x²-54x+72x²-54x+36x²)

=2(180x²-108x)

=360x²-216x

Therefore, the surface area of the given rectangular prism is 360x²-216x.

To learn more about the rectangular prism visit:

https://brainly.com/question/21308574.

#SPJ2

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