Approximate the area of the region under the graph of the function f on the interval [0, 2] using the rectangles of equal length shown. 1 3 + 1 f ( x ) = _x 8 square units Complete the following parts. (a) Give the length of each rectangle. (b ) Give the height of the first rectangle. (C) Give the height of the second rectangle. (d) Give the height of the third rectangle. (e) Give the height of the fourth rectangle. (f ) Give the height of the fifth rectangle. Give the height of the sixth rectangle. ( h ) Give the height of the seventh rectangle. (1) Give the height of the eighth rectangle