## Physics: Principles with Applications (7th Edition)

When you multiply 2 numbers, the result has as many significant digits as the factor that had the least number of significant digits. In this case, that is two significant figures. $(3.079 \times 10^{2})(0.068 \times 10^{-1}) = 2.094 m^{2} \approx 2.1 m^{2}$