Calculus Help: Integrals: A solid lies between planes perpendicular to the x-axis at x = 0 and x=9

Full question: A solid lies between planes perpendicular to the x-axis at x = 0 and x=9. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the parabola y = - 4√x to the parabola y = 4√x. Find the volume of the solid

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