Question

A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the weight density of water. Assume that a = 4 m, b = 4 m, c = 18 m, and d = 2 m.) W= ? j

Answer 1

Ihave no idea what a,b,c,d mean, but consider all the water as concentrated at the center of mass of the fluid. The work required to pump it all out is just
work = force * distance
where force is the weight of the water
distance is the height the weight must be raised.

No integration needed!

Answer 2

then why even bother answering question?