Comments on: Geometry in Real Life: What's Better Two 8-Inch Pizzas or One 12-Inch Pizza? http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/ The Neat Side of the Web Tue, 24 Nov 2009 17:32:35 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: Alex http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/comment-page-1/#comment-134865 Alex Tue, 26 Jun 2007 04:24:28 +0000 http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/#comment-134865 No aj, in order to find out the difference in the area of the pies, you need the pi. No aj, in order to find out the difference in the area of the pies, you need the pi.

]]> By: aj http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/comment-page-1/#comment-134824 aj Tue, 26 Jun 2007 01:53:36 +0000 http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/#comment-134824 alex, you don't need the pi - you can divide it out of the equation you've given. alex, you don't need the pi - you can divide it out of the equation you've given.

]]> By: Alex http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/comment-page-1/#comment-134818 Alex Tue, 26 Jun 2007 01:24:02 +0000 http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/#comment-134818 v.dog, you still need pi. Here's why: area is pi*(radius^2), so... The area of the 12 inch pizza is pi*(6^2) = 36pi The area of the 8 inch pizza is pi*(4^2) = 16pi, but there's two of them, so total area = 2* 16 pi, so it's 32 pi. The difference between the two is 36pi - 32pi = 4pi. That's roughly 4x3 or 12 square inch of pizza pie, not 4. Dave is right in terms of crust, the two 8" pizza pies will have more crust than the 12" pie. v.dog, you still need pi. Here's why: area is pi*(radius^2), so...

The area of the 12 inch pizza is pi*(6^2) = 36pi
The area of the 8 inch pizza is pi*(4^2) = 16pi, but there's two of them, so total area = 2* 16 pi, so it's 32 pi.

The difference between the two is 36pi - 32pi = 4pi. That's roughly 4x3 or 12 square inch of pizza pie, not 4.

Dave is right in terms of crust, the two 8" pizza pies will have more crust than the 12" pie.

]]> By: v.dog http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/comment-page-1/#comment-134813 v.dog Tue, 26 Jun 2007 01:18:37 +0000 http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/#comment-134813 Sorry, that should be a 4" pizza. Sorry, that should be a 4" pizza.

]]> By: v.dog http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/comment-page-1/#comment-134810 v.dog Tue, 26 Jun 2007 01:15:04 +0000 http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/#comment-134810 It's easier than that, you don't even need to use Pi at all. 8^2 + 8^2 = 128 vs 12^2 = 144. The one pizza is bigger by 16^0.5 = 4 square inches (the square root of 144-128). It's easier than that, you don't even need to use Pi at all. 8^2 + 8^2 = 128 vs 12^2 = 144. The one pizza is bigger by 16^0.5 = 4 square inches (the square root of 144-128).

]]> By: Dave http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/comment-page-1/#comment-134807 Dave Tue, 26 Jun 2007 01:07:08 +0000 http://www.neatorama.com/2007/06/25/geometry-in-real-life-whats-better-two-8-inch-pizzas-or-one-12-inch-pizza/#comment-134807 Which is the better deal depends on whose pizza you're talking about, and whether the crust is worth eating. I got a good laugh from one of the comments on the linked site: <blockquote>More like “Geometry made me fat”.</blockquote> Which is the better deal depends on whose pizza you're talking about, and whether the crust is worth eating.

I got a good laugh from one of the comments on the linked site:

More like “Geometry made me fat”.

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