May I suggest a baseball field - a large field is larger than a hectare, a small one is less than a hectare. Try plotting a quarter circle radius 112 metres onto the batters plate
_____ From: [email protected] [mailto:[email protected]] On Behalf Of STANLEY DOORE Sent: 26 April 2010 19:09 To: U.S. Metric Association Subject: [USMA:47284] Re: rant-on-imperial-v-metric 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 <mailto:[email protected]> To: U.S. Metric <mailto:[email protected]> 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-measurem ents 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 system smoothly, quickly, and so economically that they now save thousands each year when buying, processing, or selling for their businesses. Pat provides services and resources for many different trades, crafts, and professions for commercial, industrial and government metrication leaders in Asia, Europe, and in the USA. Pat's clients include the Australian Government, Google, NASA, NIST, and the metric associations of Canada, the UK, and the USA. See http://www.metricationmatters.com <http://www.metricationmatters.com/> for more metrication information, contact Pat at [email protected] or to get the free 'Metrication matters' newsletter go to: http://www.metricationmatters.com/newsletter to subscribe.
