SAT Math Practice Question #12531 - SATify | SATify

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SAT Math Practice Question #12531 - SATify | SATify

#12531

coordinate geometry

circles

geometry

hard

150 sec

In the xy-plane, the graph of $3 x^{2} + 6 x + 3 y^{2} - 12 y = 36$ is a circle. What is the radius of the circle?

A.

$10$

B.

$17$

C.

$20$

D.

5