A hawk flying at 20m/s at an altitude of 164m accidently drops its prey.

A hawk flying at 20m/s at an altitude of 164m accidently drops its prey. the parabolic trajectory of the falling prey is described by the equation y= 164-(x^2/60) until it hits the ground, where y is its height about the ground and x is the horizontal distance traveled in meters. Calculate the distance traveled by the prey from the time it is dropped until the time it hits the ground.