I have a 1996 Prizm, and it has a 10 Gallon tank. Yours is most likely the same.
Probably 10 gallons (I own a 1996 Prizm with a 10 gallon tank).
For my 94 Geo Prizm it's a 30mm.
Inside of the gas tank.. Had to change one myself.
Look under vehicle- follow the fuel line from the tank
1993 Geo Prizm LSi 0-60mph 10.7secondsquarter mile 17.7 seconds
Geo Prizm door handles are the same 1993-1997
In the fuel tank
See the related question: How do I replace the water pump on a 1993 Geo Prizm 1.8L?
The door speakers in Geo Prizms From 1993-1997 and possibly newer are 4in. and the rear speakers are 6.5in.
There are a few fuse boxes located on a 1993 Geo Prizm. The main fuse boxes are located under the driver side dash on in the engine compartment.
In the fuel tank
In the fuel tank