p=w/t=44kwh/40h= 1， 1kw= 1 100w

I = p/U = 1 100 w/220v = 5A

w = 0.75 * 44 * 1000 * 3600j = 1 18800000j

W = mgh = rho water *V*g*h

V=W/(ρ water * g * h) =11880000/(1000 *10 */kloc-0) =1.

A pool that can be filled with 1000m3.