Final answer:
To report the site size of a rectangular property measuring 800' x 900' on a URAR form, you multiply the dimensions to get 720,000 square feet (sf), which is the correct figure to report.
Step-by-step explanation:
To report the site size of a rectangular property that measures 800' x 900' on the URAR form, you would need to calculate the square footage by multiplying the two dimensions. The calculation is as follows: 800 feet x 900 feet equals 720,000 square feet (sf). Therefore, the site size reported on the URAR form should be 720,000 sf.