A small, irregularly shaped pond has a small stream flowing into the west side and another stream flowing out of the east side.

1.50 3.00 4.50 6.00 7.50 9.00

distance: 0.23 0.98 1.44 2.19 1.65 1.30 0.40 (

Assuming the cross sections perpendicular to the x-axis are semicircles, use Simpson's rule with n = 6 to approximate the volume of the pond.