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rebecca1233 Group Title

A polygon has an area of 100 square inches and one of its sides is 20 inches long. If a second similar polygon has an area of 36 square inches, what is the length of the corresponding side in the second polygon? 5 in 8 2/3 in 12 in 33 1/3 in

  • one year ago
  • one year ago

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  1. rebecca1233 Group Title
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    @erdog82

    • one year ago
  2. erdog82 Group Title
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    ok so, I believe you need to st up a proportion

    • one year ago
  3. rebecca1233 Group Title
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    can u help me please

    • one year ago
  4. erdog82 Group Title
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    ok I am trying to..

    • one year ago
  5. erdog82 Group Title
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    so you know the areas of each polygon, right?

    • one year ago
  6. rebecca1233 Group Title
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    36?

    • one year ago
  7. erdog82 Group Title
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    and what?

    • one year ago
  8. rebecca1233 Group Title
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    100?

    • one year ago
  9. erdog82 Group Title
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    yes, good :)

    • one year ago
  10. rebecca1233 Group Title
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    so what now ?

    • one year ago
  11. erdog82 Group Title
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    |dw:1358803903084:dw|

    • one year ago
  12. erdog82 Group Title
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    solve for x

    • one year ago
  13. erdog82 Group Title
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    do you need help? Because I am trying to help you.

    • one year ago
  14. Mertsj Group Title
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    Not one of the choices.

    • one year ago
  15. rebecca1233 Group Title
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    yes please help

    • one year ago
  16. erdog82 Group Title
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    did you see the drawing?

    • one year ago
  17. erdog82 Group Title
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    ?

    • one year ago
  18. rebecca1233 Group Title
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    yes i saw it..

    • one year ago
  19. erdog82 Group Title
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    try solving for x

    • one year ago
  20. rebecca1233 Group Title
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    100x = 36*20?

    • one year ago
  21. erdog82 Group Title
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    yup.

    • one year ago
  22. rebecca1233 Group Title
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    720 = 100x

    • one year ago
  23. rebecca1233 Group Title
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    then i divided and i got 7.2 but thats not one of the option choices..

    • one year ago
  24. erdog82 Group Title
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    |dw:1358804299965:dw|

    • one year ago
  25. erdog82 Group Title
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    oh yeah, what the heck?

    • one year ago
  26. Mertsj Group Title
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    Sorry but the ratio of the sides squared would be the ratio of the areas. And so the square root of the ratio of the areas would be the ratio of the sides.

    • one year ago
  27. erdog82 Group Title
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    huh?

    • one year ago
  28. Mertsj Group Title
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    So if the ratio of the areas is 36/100, the ratio of the sides is 6/10

    • one year ago
  29. rebecca1233 Group Title
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    7.2 is not an option for the answer.. answer options r .. 5 in. 8 2/3 in 12 in and 33 1/3 in

    • one year ago
  30. erdog82 Group Title
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    @Mertsj you can help @rebecca1233 now... I guess you are better at this than I am

    • one year ago
  31. Mertsj Group Title
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    6/10=x/20 Solve that if you want the answer.

    • one year ago
  32. rebecca1233 Group Title
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    so 6x= 10*20?

    • one year ago
  33. rebecca1233 Group Title
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    help me ?

    • one year ago
  34. rebecca1233 Group Title
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    hello @Mertsj

    • one year ago
  35. Mertsj Group Title
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    \[\frac{6}{10}=\frac{x}{20}\]

    • one year ago
  36. Mertsj Group Title
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    Can you solve that proportion?

    • one year ago
  37. rebecca1233 Group Title
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    so 6 *20

    • one year ago
  38. rebecca1233 Group Title
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    hen divie by 1 which gives u 12

    • one year ago
  39. rebecca1233 Group Title
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    12 in is correct answer right?

    • one year ago
  40. Mertsj Group Title
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    yes

    • one year ago
  41. rebecca1233 Group Title
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    i need help with another problem please

    • one year ago
  42. Mertsj Group Title
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    Post it. Someone will reply.

    • one year ago
  43. rebecca1233 Group Title
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    http://openstudy.com/study#/updates/50fdb892e4b00c5a3be598a7

    • one year ago
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