Convert the following three measurements from scientific notation to standard form and then answer the question that follows:
(i) Thickness of a sheet of paper: 3.45×10−4m
(ii) Mass of a grain of rice: 2.70×10−2g
(iii) Charge on an electron: 1.602×10−19C
(a) Write each quantity in ordinary numerals with correct units.
(b) For each quantity state the number of significant figures present in the given scientific‐notation value.