Consider the curb shown in $($Figure $1).$ Suppose that ll $=9$ mm $,$ aa $=190$ mmmm $,$ bb $=100$ mmmm $.$

Figure

$1$ of $1$

The figure shows a solid appearing to be a sector of a result of rotation of an assembly of a right trapezoid and a square. The square has a side of a$.$ The trapezoid has its smaller basement common with the side of the square. The leg of the trapezoid prolongs another side of the square and has length of a$.$ A bigger basement of the trapezoid is b longer than a smaller one. The assembly is rotated around the axis parallel to a basement of the trapezoid. The axis is located l away from the opposite to the trapezoid side of the square, in direction away from the assembly. The sector is $30$ degrees." title$=$"The figure shows a solid appearing to be a sector of a result of rotation of an assembly of a right trapezoid and a square. The square has a side of a$.$ The trapezoid has its smaller basement common with the side of the square. The leg of the trapezoid prolongs another side of the square and has length of a$.$ A bigger basement of the trapezoid is b longer than a smaller one. The assembly is rotated around the axis parallel to a basement of the trapezoid. The axis is located l away from the opposite to the trapezoid side of the square, in direction away from the assembly. The sector is $30$ degrees."

Part A

Determine the volume of concrete needed to construct the curb.

Express your answer to three significant figures and include the appropriate units.