Hi Pat et al,
The hectare is a great, useful and easy to visualize SI unit since it's 100
x 100 m.
In American terms, 100 m is the length of a football field plus one end
zone.
What is better to visualize an area?
Stan Doore
----- Original Message -----
From: Pat Naughtin
To: U.S. Metric Association
Sent: Sunday, April 25, 2010 3:23 AM
Subject: [USMA:47272] rant-on-imperial-v-metric
Dear All,
I am quoting from a web page defined as a 'rant'. It says in part:
An example from land measurement shows how akward the imperial measurements
can be.
What is an acre? At one time it was defined as the amount of land one man and
a team of oxen could plow in one day. The acre was later standardized to 660
feet by 66 feet or 43,560 square feet. There are 640 acres in a square mile. A
square mile is 5,280 feet by 5,280 feet or 27,878,400 square feet.
Contrast the above with the metric hectare. A hectare is 100 meters by 100
meters or 10,000 square meters. There are 100 hectares in a square kilometer. A
square kilometer is 1,000 meters by 1,000 meters or 1,000,000 square meters.
Now which looks simpler? Which would be easier to recall or teach?
You can see this in context at
http://mramath.wordpress.com/2009/07/30/a-rant-on-imperial-v-metric-measurements
Cheers,
Pat Naughtin
Author of the ebook, Metrication Leaders Guide, that you can obtain from
http://metricationmatters.com/MetricationLeadersGuideInfo.html
PO Box 305 Belmont 3216,
Geelong, Australia
Phone: 61 3 5241 2008
Metric system consultant, writer, and speaker, Pat Naughtin, has helped
thousands of people and hundreds of companies upgrade to the modern metric
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