It depends on how deep you will fill the baking dish.For every inch you fill the dish, you have about 1.1 quarts.
It depends on its depth.
the 9X13 holds 3 quarts
Quarts measures volume but the coordinates you have specified only provide an area. You cannot tell how many quarts fit into it without specifying the height of the dish.
A 4.5 quart dish! Baking dishes are not all the same depth so just giving a linear measure is no use.
BIG!....2.5 quarts is 5 pints.
An 8 x 8 Pyrex baking dish typically holds about 2 quarts.
2.36 L 1 quart = 0.94 Liter 1 Liter = 1.05 quart
Volume up to the rim = 9" x 9" x 2" = 162 cubic inches = 0.7013 gallon = 2.8052 quarts.
Fill it with water then empty the water out into a measuring jug (bit by bit if needed) and note the total volume.
It's basicly just a baking dish that can hold up to 750mL
Yes, you can use a baking bag in a large baking dish, as long as the food you plan to bake will fit into the dish you want to use.