Question

12579 nm rounded to 3 significant figures is

Answer 1

$\\ \sf\longmapsto 12579nm$

$\\ \sf\longmapsto 12579\times 10^{-9}m$

$\\ \sf\longmapsto 1257.9\times 10^{-8}m$

$\\ \sf\longmapsto 12.5\times 10^{-6}m$

$\\ \sf\longmapsto 12.5\mu m$

Answer 2

Answer:

1.26e-5

Explanation:

Change 12579 nm to meters first, it becomes 1.2579e-5, then rounding it to 3 significant figures becomes 1.26e-5.