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stupidinmath
 one year ago
what is the circumference of the circle x^2+y^210y36=0?
a. 38
b. 49
c. 54
d. 125
e. 192
stupidinmath
 one year ago
what is the circumference of the circle x^2+y^210y36=0? a. 38 b. 49 c. 54 d. 125 e. 192

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eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1\[ x^2+y^210y36=0\\ x^2+y^210y+25 2536=0\\ x^2 +(y5)^2 = 61=r^2\\ r=\sqrt{61}\\ \]

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1\[ 2 \pi r = 2 \pi \sqrt{61}=49.0732 \]

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1It seems b is the answer
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