Siri has half the amount of quarts in a gallon how many cups are in those quarts if there are 4 quarts in a gallon

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie