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anonymous

  • one year ago

A rectangular prism is completely packed with 90 cubes of edge length fraction 1 over 2 inch, without any gap or overlap. Which of the following describes the volume of this rectangular prism? 11 unit cubes and 1 smaller cube of volume fraction 1 over 8 cubic inch 22 unit cubes and 4 smaller cubes of volume fraction 1 over 8 cubic inch each 11 unit cubes and 2 smaller cubes of volume fraction 1 over 8 cubic inch each 22 unit cubes and 2 smaller cubes of volume fraction 1 over 8 cubic inch each Could someone teach me the steps please? I reviewed the lesson, I still don't understand

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  1. welshfella
    • one year ago
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    Hint: volume of each cube = 1/2 * 1/2 * 1/2

  2. welshfella
    • one year ago
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    oh you were given that anyway!

  3. anonymous
    • one year ago
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    so that would be 1/6

  4. welshfella
    • one year ago
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    no they are multiplied

  5. anonymous
    • one year ago
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    I'm pretty sure the volume of each cube is 1/8. Just divide 90 by 1/8 after that and you'll find the answer.

  6. welshfella
    • one year ago
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    yep

  7. anonymous
    • one year ago
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    Oh yeah, so 1/8 right? Ye

  8. anonymous
    • one year ago
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    Thank you you two, I'm supposed to be in 10th grade math buuut I have to retake 6th... Kinda embarrassing.

  9. anonymous
    • one year ago
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    It's okay! gl<3

  10. welshfella
    • one year ago
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    well multiply 90 by 1/8 and find the quotient and remainder

  11. anonymous
    • one year ago
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    While I have you two let me check my work with you if it's fine

  12. anonymous
    • one year ago
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    A-okay!

  13. anonymous
    • one year ago
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    So it would be (90*1)/8 right?

  14. anonymous
    • one year ago
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    Which would come out to be 11.25?

  15. welshfella
    • one year ago
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    No there are 11 unit cubes but how many of the smaller ones?

  16. welshfella
    • one year ago
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    90 / 8 = 11 and how many over?

  17. anonymous
    • one year ago
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    25

  18. anonymous
    • one year ago
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    Wait no, 2?

  19. welshfella
    • one year ago
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    11*8 = 88 - that equals 11 unit cubes and there are 90-88 = 2 small ones left

  20. anonymous
    • one year ago
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    Yes

  21. anonymous
    • one year ago
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    so it would be c!

  22. welshfella
    • one year ago
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    right C

  23. anonymous
    • one year ago
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    Thank you for the help! I really appreciate it.

  24. welshfella
    • one year ago
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    yw

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