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zigzagoon2000

  • 2 years ago

Please help a. Find the surface area of the cube. b. Find the volume of the cube. Cube: http://i1255.photobucket.com/albums/hh639/zigzagoon20001/Question3Cube.jpg

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  1. Callisto
    • 2 years ago
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    What is the area of one surface of the cube?

  2. zigzagoon2000
    • 2 years ago
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    I don't know.

  3. myko
    • 2 years ago
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    think

  4. zigzagoon2000
    • 2 years ago
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    I don't know how to do this.

  5. myko
    • 2 years ago
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    how would you calculate suqare meters of your room?

  6. zigzagoon2000
    • 2 years ago
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    I don't know, how would you do that?

  7. myko
    • 2 years ago
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    you would multiply width by length, no?

  8. zigzagoon2000
    • 2 years ago
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    Okay, and how do I figure out the width or the length? It only says "4x-5" underneath the cube.

  9. myko
    • 2 years ago
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    |dw:1354440210511:dw| right?

  10. zigzagoon2000
    • 2 years ago
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    I don't know if that's right. If you say so. I don't know that much about this topic. So what would the width or length be in this situation?

  11. myko
    • 2 years ago
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    to figure an area of a rectangular region, you multiply it's length by it's width

  12. zigzagoon2000
    • 2 years ago
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    Well myko just told me how, but I do not know the width or length is of this rectangle.

  13. myko
    • 2 years ago
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    so , imagine you have a square (length = width) |dw:1354440386801:dw|

  14. zigzagoon2000
    • 2 years ago
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    I'm sorry, this is all very confusing to me.

  15. myko
    • 2 years ago
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    this is, actualy, one of the faces of the cube. To find total surface area, just count how many faces it has.

  16. zigzagoon2000
    • 2 years ago
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    I'm assuming it has 6 faces, right?

  17. myko
    • 2 years ago
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    you right, so total surface area will be 6 times the area of one of the faces

  18. myko
    • 2 years ago
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    in your case: |dw:1354440579144:dw|

  19. myko
    • 2 years ago
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    got it?

  20. skullpatrol
    • 2 years ago
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    Still confused?

  21. skullpatrol
    • 2 years ago
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    The definition of area reads: area: The area of a region is the number of square units it contains.

  22. skullpatrol
    • 2 years ago
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    In this question you can not calculate a numerical answer because you don't know what the value of x is. You can only give the equations: surface area = 6(4x-5)^2 volume = (4x-5)^3

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