SAT Math Practice Question #32974 - SATify | SATify

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SAT Math Practice Question #32974 - SATify | SATify

#32974

equations

circles

coordinate geometry

hard

120 sec

The equation $3 x^{2} - 18 x + 3 y^{2} + 6 y = 30$ represents a circle in the xy-plane. What is the circumference of this circle?

A.

$2 π 5$

B.

$4 π 5$

C.

$20 π$

D.

$40 π$