Q. 185.0( 1 Vote )

# The length

Given equation of the parabola is 4y2 + 2x - 20y + 17 = 0 4y2 - 20y + 17 = - 2x   Comparing with standard form of parabola (y - a)2 = - 4b(x - c) we get, We know that the that the length of the latus rectum is 4b.

The correct option is C

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