Question

Dr. Santagata likes to collect the money that she finds on the ground. (True story- it's free money!) She recently found a penny whose mint year was not discemible. In the lab, she measured the diameter (1.90 em), thickness (0.11 cm), and mass (3.097 g) of the penny. Was this penny likely minted before or after 1982 ? Show all calculations to the correct number of significant figures and include units

Answer 1