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Hayleymeyer

  • one year ago

http://media.education2020.com/evresources/878-12-03-00-00-sur_files/i0120000.jpg What is the surface area of the figure above? Note that the figure is made up of congruent cubes.

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  1. Hayleymeyer
    • one year ago
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    |dw:1434028066954:dw|

  2. anonymous
    • one year ago
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    8

  3. anonymous
    • one year ago
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    Do you know any information about the cubes?

  4. anonymous
    • one year ago
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    yes

  5. anonymous
    • one year ago
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    u time one side by the other or you can try to count them all

  6. anonymous
    • one year ago
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    but i got it wrong enyways

  7. anonymous
    • one year ago
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    the reall answer is..................

  8. Hayleymeyer
    • one year ago
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    a. 80 cm2 c. 48 cm3 b. 1,280 cm2 d. 640 cm

  9. imqwerty
    • one year ago
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    so the combination of cubes forms a cuboid of dimensions - 4,4,8. nw jst apply the formula to get surface area of this cuboid

  10. Hayleymeyer
    • one year ago
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    I got 80?

  11. Hayleymeyer
    • one year ago
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    opsiieee I mean 224*

  12. anonymous
    • one year ago
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    Well, the surface area is 2*(lb+bh+lh) where l=net length, b=neet breadth, h= net height Here, total length= 4*4 =16unit (since four cubes side to side, each with length 4 unit) breadth= 2* 4=8unit (since 2 cubes top to bottom) h=4unit (1 cube) So the surface area is: 2*(16*8+8*4+16*4)

  13. Hayleymeyer
    • one year ago
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    I thought the surface area would be 2*L*H+2*H*W+2*L*W?

  14. anonymous
    • one year ago
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    The options are wrong.

  15. anonymous
    • one year ago
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    Well, I used the symbol b instead of w. It doesn't affect the problem.

  16. imqwerty
    • one year ago
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    * sorry the dimensions are 16,4,8

  17. Hayleymeyer
    • one year ago
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    alright, thanks everyone!

  18. imqwerty
    • one year ago
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    welcom @Hayleymeyer

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