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noaheasch
noaheasch noaheasch
  • 28-08-2016
  • Mathematics
Answered

What is the radius of the following circle? (x+5)2+(y-10)2=121

Verified Answer :

setzer12
setzer12 setzer12
  • 28-08-2016

Hint:

(x + 10)^2 + (y + 15)^2 = 121

(x - (-10))^2 + (y - (-15))^2 = 121

(x - (-10))^2 + (y - (-15))^2 = 11^2

Compare the last equation to (x-h)^2+(y-k)^2=r^2

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