idk if you already turned your shit in, but I think it's wrong

A) V=16(pi)h

dV/dt=16(pi) dh/dt

dV/dt=16(pi)(h-12)

dV/dt=16(pi)h-192

B) dV/dt = 16(pi)h - 192

dV/dt = 48(pi) - 192

dV/dt = -41.2

C) V = 400(pi)y

dV/dt = 400(pi)dy/dt

The volume of the cylinder is changing at the same rate of the volume of the cone, just opposite

41.2 = 400(pi)dy/dt

dy/dt = .0328 ft/min

I could have fucked up I haven't done this in a while