Choosing Appropriate Levels of Accuracy Practice Test

A store sign lists a product weight as 1.50 lb. The scale used in the store reads to the nearest 0.1 lb. Identify the false precision in the statement.

Two lengths are measured as 3.2 m and 8.75 m. You multiply them to find an area: $3.2\times 8.75=28.0$ (from the calculator). How should the product be reported given the measurement precision?