No idea about how to solve these two

Thanks a lot

Problem #1: A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 32 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate. Find the hydrostatic force on one side of the gate. Note that your answer should be in Newtons, and use g = 9.8 m/s? Problem 21: Problem #5: Let y(x) be the solution to the following initial value problem. (In x) dx (1) = 3 Find ye). Problem: Enter your answer symbolically as in these examples