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anonymous

  • one year ago

What is the length of stack J M in the rectangular prism? Round your answer to the nearest tenth. A. 20.0 cm B. 21.5 cm C. 23.3 cm D. 25.7 cm http://static.k12.com/calms_media/media/1579000_1579500/1579249/1/1090308dc016d6dbab2b0fdc1106a502ce61ccd7/MS_IMC-150123-130603.jpg

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  1. anonymous
    • one year ago
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    |dw:1434284021261:dw|

  2. butterflydreamer
    • one year ago
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    Firstly you'll want to find the length of DM first :) So focus on this triangle and use pythagoras theorem: |dw:1434284195211:dw|

  3. anonymous
    • one year ago
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    So if I find DM will that be close to my answer :O

  4. butterflydreamer
    • one year ago
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    hmm.. well when we find DM, we can then use triangle JDM to find the length of JM :) So let's take it one step at a time

  5. anonymous
    • one year ago
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    Oh okay so I find area or perimeter? I think area

  6. butterflydreamer
    • one year ago
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    |dw:1434284365815:dw|

  7. anonymous
    • one year ago
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    Okay

  8. butterflydreamer
    • one year ago
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    do you remember pythagoras' theorem?

  9. anonymous
    • one year ago
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    Yes

  10. anonymous
    • one year ago
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    Is it 20?

  11. butterflydreamer
    • one year ago
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    yeees! Good job so now we know that DM = 20 :) SO now we look at triangle JDM and find the length of JM |dw:1434284519786:dw|

  12. anonymous
    • one year ago
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    21.54?

  13. butterflydreamer
    • one year ago
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    Exactly!! ^_^ But the question says to the nearest tenth so round 21.54 to 1 decimal place

  14. anonymous
    • one year ago
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    21.5?

  15. butterflydreamer
    • one year ago
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    yep :) Good job!

  16. anonymous
    • one year ago
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    Yes thanks :D

  17. anonymous
    • one year ago
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    Now I can finish this test *^*

  18. butterflydreamer
    • one year ago
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    haha no problemo~

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