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kmeds16

  • 11 months ago

Circles A and B have radii 5 and 7 respectively, and the distance between their centers A and B is 5. If the two circles intersect at points M and N, MN = a sqrtof 6. What is a+b?

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  1. kmeds16
    • 11 months ago
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    I can draw it or visualize, but then i got stucked up in the diagonals thingy, in which I know there is a way in finding it.. i just want an assistance. Please helpppp

  2. shrutipande9
    • 11 months ago
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    can i ask u 1 thing...wat is exactly a and b?

  3. Jack1
    • 11 months ago
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    @kmeds16 can u upload a pic of the problem?

  4. kmeds16
    • 11 months ago
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    @shrutipande9 the measure of MN is

  5. kmeds16
    • 11 months ago
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    @shrutipande9 is a square root of b. and if u add and b, it will result to 10

  6. shrutipande9
    • 11 months ago
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    MN is sqr rt of b or 6?

  7. kmeds16
    • 11 months ago
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    a sqrt of b = MN a + b = 10 the distance between the centers: 6

  8. shrutipande9
    • 11 months ago
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    ohhh..now i get it...wait

  9. kmeds16
    • 11 months ago
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    @shrutipande9 i drew it and will attach the file. from the way i understood it

  10. kmeds16
    • 11 months ago
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    @shrutipande9 i understood it like this (file). Red line = MN. Green line = 6.

    1 Attachment
  11. kmeds16
    • 11 months ago
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    @shrutipande9 so it will result looking like a kite right? in which we have 6 as diagonal1 and the diagonal2 is missing. I am confused on how to find the other diagonal, there is a propery of something for this

  12. shrutipande9
    • 11 months ago
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    ya u r right wid d diag...i m just tryin 2 remember d formula....:P

  13. kmeds16
    • 11 months ago
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    as what i can remember also, are of the kite = d1d2 divide by 2

  14. shrutipande9
    • 11 months ago
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    but for this to be a kite the diagonals need 2 be perpendicular bisectors....and we cannot just deduce it from that...

  15. kmeds16
    • 11 months ago
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    it is perpendicular =))

  16. shrutipande9
    • 11 months ago
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    its given?

  17. kmeds16
    • 11 months ago
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    it is really perpendicular XD from what we can see, because of theintersection of the two circles

  18. shrutipande9
    • 11 months ago
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    no..we cannot deduce it just by seeing...wait ill get u a better helper...:P @divu.mkr

  19. kmeds16
    • 11 months ago
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    @shrutipande9 ahhh ye right i get it, so, how can we get the other diagonal?? i have the answer here, it is 10

  20. kmeds16
    • 11 months ago
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    a plus be is 10

  21. divu.mkr
    • 11 months ago
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    well they are perpendicular...you need not to derive it just remember it

  22. divu.mkr
    • 11 months ago
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    familiar with trigo?

  23. kmeds16
    • 11 months ago
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    yeah

  24. kmeds16
    • 11 months ago
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    @divu.mkr YEAHHHH =)))

  25. divu.mkr
    • 11 months ago
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    |dw:1390642954599:dw|

  26. kmeds16
    • 11 months ago
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    @divu.mkr hey

  27. divu.mkr
    • 11 months ago
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    yep

  28. divu.mkr
    • 11 months ago
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    ??

  29. kmeds16
    • 11 months ago
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    @divu.mkr |dw:1390642954599:dw|?? =))

  30. divu.mkr
    • 11 months ago
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    its looking perfect in my browser... :D

  31. divu.mkr
    • 11 months ago
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    lemme get a snap of it

  32. kmeds16
    • 11 months ago
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    huhu it doesnt on mine :*(

  33. kmeds16
    • 11 months ago
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    i can only see |dw:1390642954599:dw| huhuhuhuhu

  34. divu.mkr
    • 11 months ago
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    1 Attachment
  35. divu.mkr
    • 11 months ago
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    is it ok now?

  36. kmeds16
    • 11 months ago
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    i can see it now

  37. kmeds16
    • 11 months ago
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    @divu.mkr i have a question

  38. divu.mkr
    • 11 months ago
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    yep..ask

  39. kmeds16
    • 11 months ago
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    how can you find the other diagonal, given diagonal 1 and all the sides??

  40. eliassaab
    • 11 months ago
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    Am I missing something? Is the attached graph accurate?

    1 Attachment
  41. kmeds16
    • 11 months ago
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    ya it is, wait, i will attach something regarding to my question

  42. eliassaab
    • 11 months ago
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    So MN=10

  43. kmeds16
    • 11 months ago
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    I understood inside details (i removed the circle) like this: @eliassaab. i know that it has something to do with kites and diagonals and properties and etc etc but i am rly confused.

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  44. kmeds16
    • 11 months ago
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    @eliassaab i have to find MN, the red line. The answer is in the form of MN = a sqrtof b and a + b = 10

  45. kmeds16
    • 11 months ago
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    blue line = 6

  46. kmeds16
    • 11 months ago
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    @eliassaab heyyy =)))

  47. eliassaab
    • 11 months ago
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    What is the relation between your original question and this graph?

  48. kmeds16
    • 11 months ago
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    @eliassaab from this

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  49. eliassaab
    • 11 months ago
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    But the distance between the centers of the two circles is not 5. Your original question is not 100% correct. This one is different.

  50. kmeds16
    • 11 months ago
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    @eliassaab oh my god i am so sorry,the original is 6. i am very sorry

  51. kmeds16
    • 11 months ago
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    Circles A and B have radii 5 and 7 respectively, and the distance between their centers A and B is 6. If the two circles intersect at points M and N, MN = a sqrtof b. What is a+b? ORIGINAL QUESTION. @eliassaab sorry! hahaha

  52. kmeds16
    • 11 months ago
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    @eliassaab heyyy =)))

  53. eliassaab
    • 11 months ago
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    I will do it for you after lunch.

  54. kmeds16
    • 11 months ago
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    @eliassaab ahm okay =)) I will wait for your reply! :D i will really do :)

  55. eliassaab
    • 11 months ago
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    Here is a quick solution

    1 Attachment
  56. kmeds16
    • 11 months ago
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    @eliassaab ahh! Ok i get it! Thank you!! :)

  57. eliassaab
    • 11 months ago
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    NP

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