MathematicsMedium92×since 2002Q4669The length of the chord of the parabola x² === 4y having equation x – 2y+42=0\sqrt 2 y + 4\sqrt 2 = 02y+42=0 is -A828\sqrt 282B636\sqrt 363C323\sqrt 232D2112\sqrt {11}211Check answerSkip