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shayanreloaded

If a2 + b2 + c2 = 250 and ab + bc + ca = 3, then a + b + c is

  • 2 years ago
  • 2 years ago

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  1. WAHEEDAHMED
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    shayan use here the formula of (a+b+c)^2 this would help

    • 2 years ago
  2. asnaseer
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    follow suggestion by waheedahmed and answer should become abvious

    • 2 years ago
  3. shayanreloaded
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    thanks a lot 16 ans

    • 2 years ago
  4. shayanreloaded
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    or -16?

    • 2 years ago
  5. shayanreloaded
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    Area of triangle, having sides as 8, 11 and the perimeter 32 is

    • 2 years ago
  6. ezhyl_marie
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    (a + b + c)^2= a^2 + b^2 + c^2 + 2(ab + bc + ca), since, a^2 + b^2 + c^2 = 250 and ab + bc + ca = 3, (a + b + c)^2 = 250 + 2(3) = 256 = 16^2 therefore: a + b + c = 16 ,.

    • 2 years ago
  7. shayanreloaded
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    why not -16?

    • 2 years ago
  8. shayanreloaded
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    Area of triangle, having sides as 8, 11 and the perimeter 32 is

    • 2 years ago
  9. WAHEEDAHMED
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    area is always taken positive shayanreloaded thats why...

    • 2 years ago
  10. shayanreloaded
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    lol these are 2 dif qs

    • 2 years ago
  11. WAHEEDAHMED
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    i have given u the answer of above shayan

    • 2 years ago
  12. WAHEEDAHMED
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    not the second one

    • 2 years ago
  13. shayanreloaded
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    for first -16 is possible right? and help wid 2nd

    • 2 years ago
  14. WAHEEDAHMED
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    you had asked why not -16 for that

    • 2 years ago
  15. WAHEEDAHMED
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    no area cant be -16 shayan

    • 2 years ago
  16. shayanreloaded
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    this is fr 1st question which is not bout area

    • 2 years ago
  17. WAHEEDAHMED
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    ok my mistake both 16 and -16 are possible sorry about that shayan ...i hope u would understand

    • 2 years ago
  18. shayanreloaded
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    yeah i do now 2nd ques lol

    • 2 years ago
  19. WAHEEDAHMED
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    do you know the formula for perimeter shayan the solution is in it

    • 2 years ago
  20. shayanreloaded
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    hm add sides?

    • 2 years ago
  21. shayanreloaded
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    3rd side is 13 i dont think i rem. herons formula

    • 2 years ago
  22. WAHEEDAHMED
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    after getting third side u will find s=a+b+c/2

    • 2 years ago
  23. shayanreloaded
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    16 ok

    • 2 years ago
  24. Siddharth18
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    16 is the answer

    • 2 years ago
  25. WAHEEDAHMED
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    now use this A=squareroot(s(s-a)(s-b)(s-c)

    • 2 years ago
  26. WAHEEDAHMED
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    did u get the answer shayan

    • 2 years ago
  27. shayanreloaded
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    43.8?

    • 2 years ago
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