mathematics

A rectangular prism has sides that are in the ratio of 5:7:11. If the volume of the prism is 10395 cm3, then the surface area of the prism in square millimetres is __

The sides of the prism are all ___ times as large as the numbers shown in the given ratio.

What are the side lengths of the prism, in cm?

What is the surface area of the prism, in mm2?

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  1. 5x*7x*11x = 10395
    x^3 = 27
    x = 3
    So now you know the dimensions, and you can easily find the surface area.

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    oobleck
  2. Can you help me with the whole question?

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  3. come on, guy. The prism is 15 by 21 by 33
    so the area is, as usual
    2(15x21 + 15x33 + 21x33)

    better study this section some more, eh?

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    oobleck
  4. My apologies Mr. Oobleck. I will try to study better next time. This is a new concept for me that was just introduced. And, I am struggling. I am usually good at Math, but this unit was a little challenging for me. Anyways, thank you for your support. :)

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