Part b
Given the cross-sectional area measurements \(A(0) = 2.0\), \(A(1) = 3.5\), \(A(2) = 4.0\), \(A(3) = 3.0\), and \(A(4) = 2.5\) m², use the formula derived in part (a) with \(h = 1\) meter to calculate the approximate volume of the reservoir. State your answer with appropriate units.