http://www.cornellfinch.com/2008/11/17/help-me-do-some-simple-sums/ Why stop now, just when I'm hating it? Sun, 14 Mar 2010 08:47:18 +0000 http://wordpress.org/?v=2.9.1 hourly 1 http://www.cornellfinch.com/2008/11/17/help-me-do-some-simple-sums/comment-page-1/#comment-130 George Mon, 17 Nov 2008 01:34:11 +0000 http://www.cornellfinch.com/?p=204#comment-130 Hi Mate Almost right - the area of a right angled triangle is base x height divided by 2. So, in your example that is 28 x 28 / 2 = 392 sq cm. Then multiplied by the height of the tank (45 cm) gives a volume of 17640 cc, which equates to 17.64 litres. So subtracting this from your calculation of 72 litres, gives a theoretical volume for your tank of 54.36 litres. Unless of course I have it wrong. You could take into account the thickness of the glass (cos I expect those are external measurements) but that won't amount to many litres :-) Hi Mate
Almost right – the area of a right angled triangle is base x height divided by 2. So, in your example that is 28 x 28 / 2 = 392 sq cm. Then multiplied by the height of the tank (45 cm) gives a volume of 17640 cc, which equates to 17.64 litres. So subtracting this from your calculation of 72 litres, gives a theoretical volume for your tank of 54.36 litres. Unless of course I have it wrong. You could take into account the thickness of the glass (cos I expect those are external measurements) but that won’t amount to many litres :-)

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