anonymous
  • anonymous
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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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cwrw238
  • cwrw238
find the length of the line joining the 2 points and divide the answer by 2
anonymous
  • anonymous
Um, not really sure what that means
anonymous
  • anonymous
Find the distance between the points and divide by 2

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anonymous
  • anonymous
so that would bewhat around4ish
cwrw238
  • cwrw238
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
anonymous
  • anonymous
|dw:1357683394940:dw|
anonymous
  • anonymous
ok well I got 2
anonymous
  • anonymous
|dw:1357683510146:dw|
anonymous
  • anonymous
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.
anonymous
  • anonymous
wow.. Hopefully that's correct lol that looks about right! Thanks!
anonymous
  • anonymous
anytime

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