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shayanreloaded

  • 4 years ago

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

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

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

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

  4. shayanreloaded
    • 4 years ago
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    or -16?

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

  6. ezhyl_marie
    • 4 years ago
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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 ,.

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

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

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

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

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

  12. WAHEEDAHMED
    • 4 years ago
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    not the second one

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

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

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

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

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

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

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

  20. shayanreloaded
    • 4 years ago
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    hm add sides?

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

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

  23. shayanreloaded
    • 4 years ago
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    16 ok

  24. Siddharth18
    • 4 years ago
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    16 is the answer

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

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

  27. shayanreloaded
    • 4 years ago
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    43.8?

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