1.某扇形的面积为3π,半径为6,此扇形的弧长为( )
0 285429 285437 285443 285447 285453 285455 285459 285465 285467 285473 285479 285483 285485 285489 285495 285497 285503 285507 285509 285513 285515 285519 285521 285523 285524 285525 285527 285528 285529 285531 285533 285537 285539 285543 285545 285549 285555 285557 285563 285567 285569 285573 285579 285585 285587 285593 285597 285599 285605 285609 285615 285623 366461
| A. | π | B. | 2π | C. | 3π | D. | 4π |