Can someone please tell me why my answer is wrong???!!! This is physical application

3k N13 A trough has a trapezoidal cross section with a height of 5 m and horizontal sides of 5 width 5 m and 5 m. Assume the length of the trough is 13 m. See the gure to the right. Complete parts (a) and (b) below. a. How much work is required to pump the water out of the trough (to the level of the top of the trough) when it is tull? Use 1000 kg / m3 for the density of water and 9.8 m 152 for the aweleration due to gravity. Draw a y-axis in the vertical direction (parallel to gravity) and use the midpoint of the bottom of one edge of the trough as the location of the origin. For 0 5 y 55. nd the cross-sectional area Am in terms of y. AW- (Simplify your answer. Use integers or fractions for any numbers in the expression.)