Given a area of a rectangle is 1050 x exponent 8 y exponent of 4 which of the following could not be the rectangles dimension of its length and width

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882