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BrittanyFrench

  • 3 years ago

please help! if the diamter of the circle has endpoints at (-2,4) and (3,8), what is the length of the radius of the circle?

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  1. cwrw238
    • 3 years ago
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    find the length of the line joining the 2 points and divide the answer by 2

  2. BrittanyFrench
    • 3 years ago
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    Um, not really sure what that means

  3. Argos
    • 3 years ago
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    Find the distance between the points and divide by 2

  4. BrittanyFrench
    • 3 years ago
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    so that would bewhat around4ish

  5. cwrw238
    • 3 years ago
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    the formula for the length of a line joining (x1,y1) and (x2,y2) = sqrt [(x2-x1) ^2 + y2-y1)^2] which is the Pythagoras theorem

  6. Argos
    • 3 years ago
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    |dw:1357683394940:dw|

  7. BrittanyFrench
    • 3 years ago
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    ok well I got 2

  8. Argos
    • 3 years ago
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    |dw:1357683510146:dw|

  9. ashlynn143
    • 3 years ago
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    hope this helps Use the distance formula to find the length of the diameter between these two points. d = √[ (-2-3)^2 + (4-8)^2 ] d = √[ (-5)^2 + (-4)^2 ] d = √( 25 + 16 ) d = √( 41 ) = 6.40312424 = diameter. the radius is 1/2 the diameter. 6.40312424/2 = 3.20156212.

  10. BrittanyFrench
    • 3 years ago
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    wow.. Hopefully that's correct lol that looks about right! Thanks!

  11. ashlynn143
    • 3 years ago
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    anytime

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