Well, to calculate the square feet of a 2-story house, you need to first calculate the square footage of each floor independently. For each floor, multiply the length by the width. Then add the two totals together to get the total square footage of the house. Make sure your measurements are accurate!
The way to do it is pretty straightforward. Start by carefully measuring the length and width of the ground floor and calculate its area. Then do the same for the second floor. Sum up these two areas, and that's your total square footage for the 2-story house. Accuracy in measurements is key!