the front door of a house is 80 inches tall. what is the volume of the door?

for volume you need Height x Width x Thickness

there are a lot of different sizes but the most common size entrance door is 36 inches wide, 1 and 3/4 inch thick
but we don't know what size the door you're asking about is

To determine the volume of the door, we need additional information about its dimensions. Volume is calculated by multiplying the three dimensions of an object: length, width, and height. In this case, we only know the height of the door, which is 80 inches.

To find the volume, we need to know the length and width of the door. Could you please provide the measurements for the length and width?