Question

$5800$ $\mathring{A}=5.8\times {10}^{-x}m$. Find the value of $x$.

Answer 1

1 Angstrom, or $1\mathring{A}$ is $1\times {10}^{-10}$meter.
So, $5800\mathring{A}$ = $5800\times 1\times {10}^{-10}$meter = $5.8\times {10}^{-7}$meter.