Calculate the mass of 5.00 cubic feet of water at 25 degrees Celcius.

I have no idea how to go from ft ^3 to temperature.
Please help.

First, note the correct spelling of celsius.

You don't get from cubic feet to temperature. I would look on the web for the density of water in pounds/cubic foot at 25 C. The problem doesn't specify units. I found 62.24 lb/ft^3 at 25 C.
So 5 ft^3 x 62.24 lb/ft^3 = ??
http://www.engineeringtoolbox.com/water-specific-volume-weight-d_661.html