Convert various units of distance to kilometers, meters, centimeters, and millimeters.

Step 1: $1$ km = $1000$ m
$1$ km\textsuperscript{2} = $(1000$ m$)^{2}$
$= 1000 \times 1000$ m\textsuperscript{2}
$= 1\,000\,000$ m\textsuperscript{2}

1,000,000 m^{2}

Step 2: $1$ km\textsuperscript{2} = $1\,000\,000$ m\textsuperscript{2}
Number of km\textsuperscript{2} in $100$ m\textsuperscript{2} $= \frac{100 m^{2}}{1\,000\,000 m^{2}/km^{2}}$
$= 0.0001$ km\textsuperscript{2}

0.0001 km^{2}

Step 3: $1$ m\textsuperscript{2} = $10\,000$ cm\textsuperscript{2}
$500\,000$ cm\textsuperscript{2} $= \frac{500\,000}{10\,000}$ m\textsuperscript{2}
$= 50$ m\textsuperscript{2}
$50$ m\textsuperscript{2} $= \frac{50}{1\,000\,000}$ km\textsuperscript{2}
$= 0.00005$ km\textsuperscript{2}

0.00005 km^{2}

Step 4: $5400$ m\textsuperscript{2} $= \frac{5400}{1\,000\,000}$ km\textsuperscript{2}
$= 0.0054$ km\textsuperscript{2}

0.0054 km^{2}