Final answer:
The size of the union on a flag that is 19 feet by 10 feet is approximately 1 foot by 1.9 feet.
Step-by-step explanation:
To find the size of the union on a flag that is 19 feet by 10 feet, we need to know the dimensions of the union. The union on the United States flag takes up the top-left corner and has a specific ratio of dimensions. The ratio is 1:1.9, which means the width is equal to 1 unit and the height is equal to 1.9 units. Since the width of the flag is 19 feet, the width of the union is 1 unit, and the height of the union can be found by multiplying the width by 1.9. Therefore, the size of the union on a flag that is 19 feet by 10 feet is 1 unit by 1.9 units, or approximately 1 foot by 1.9 feet.