For area the square hectometer (hm) is a common unit.

The fire was an irregular smudge covering a square hectometer, smoldering fitfully at the edges.

In the Netherlands, frequently-positioned hectometer posts include the route number, the distance in hectometers, and the current speed limit.

A hectometre (American spelling: hectometer, symbol hm) is an uncommonly used unit of length in the metric system, equal to one hundred metres.

A regulation football or soccer field is approximately 1 hectometre in length.

As the name suggests, Dutch hectometre markers are spaced at 100-metre intervals.

(Note: dam and hm stand for cubic decametre and cubic hectometre respectively.

A hectometre (American spelling: hectometer, symbol hm) is an uncommonly used unit of length in the metric system, equal to one hundred metres.

Hence "100 m" rather than "1 hm" (hectometre) or "10 dam" (decametres).

A 'hectare' (symbol 'ha', ) is a unit of area equal to , or one square hectometre (100 metres, squared), and commonly used for surveying.

Instead he turned to a field that was being largely ignored, that of medium frequency (hectometre) radio signals in the 0.5-3 MHz range, around the AM broadcast bands.

Another novel concept on Dutch hectometre markers is that speed limits are displayed on the marker boards when the speed limit is less than the national default of 120 km/h.

For volumes the cubic hectometre (hm) is also used, 100 m by 100 m by 100 m equalling 1,000,000 cubic metres (1,000,000 m).

Hence 100 ares equals an area with dimensions 100 m by 100 m - 1 hectometre by 1 hectometre, the square hectometre - equalling 10,000 square metres (10,000 m)