Talk:Geography of Alberta

Mountain passes
If you are going to include mountain passes n BC, then include Rogers. If not, remove Peace River pass.-	# Peace River Pass in British Columbia. By this pass Alexander Mackenzie made his voyage. -	# Peace River Pass in British Columbia. By this pass Alexander Mackenzie made his voyage.

Perimeter
What is the perimeter of Alberta's boundries? Are there any articles on the perimeters of geographic entities? Kevlar67 04:15, 22 February 2006 (UTC)
 * Roughly 3776 km --Qyd 06:09, 6 November 2006 (UTC)

The number for the boundary length of 644 km (400 miles) should be checked. I calculated a value of 555.2 km for 10 degrees of longitude at a latitude of 60 degrees. The radius of the Earth at 60 degrees latitude is 6362.1 km. Therefore the radius of the Arctic circle will be r·cos(60°) = 3181.1 km. 10 degrees (0.174) of longitude at a latitude of 60 degrees will span a distance of 0.17453 radians · 3181.1 km = 555.2 km. Measuring the distance on Google Earth gives 556.8 km. —Preceding unsigned comment added by 68.146.78.58 (talk) 22:41, 11 November 2010 (UTC)

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