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caronruffin56 caronruffin56
  • 17-11-2014
  • Mathematics
Answered

what is the equation of a circle with center (2, -5) and radius 4?

Verified Answer :

luana
luana luana
  • 17-11-2014

\(Equation\ of\ circle\\\\\ r^2=(x-a)^2+(y-b)^2\\\\ a,b- \ coordinates\ of\ center\ of\ circle\\\\\ (a,b)=(2,-5) \\\\ r-\ radius\\\\ r=4\\\\Solution:\ 4^2=(x-2)^2+(y+5)^2\\\\\\)

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konrad509
konrad509 konrad509
  • 17-11-2014

\((x-h)^2+(y-k)^2=r^2\\\\ (x-2)^2+(y+5)^2=16\)

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