Answer:
Significant figures are any non-zero digits or trapped zeros. They do not include leading or trailing zeros. When going between decimal and scientific notation, maintain the same number of significant figures.
Explanation:
Google says, and from what I remember and what google says, the significant figures would be, for 1 mil, 1 significant figure. for 5280 ft, 3 significant figures. basically, omit any zeros that aren't in the middle of the number.
