"What is the area? You should be able to solve this"
08-07-2018, 01:53 AM (This post was last modified: 08-07-2018 01:59 AM by Gerson W. Barbosa.)
Post: #11
 Gerson W. Barbosa Senior Member Posts: 1,429 Joined: Dec 2013
RE: "What is the area? You should be able to solve this"
(08-07-2018 12:57 AM)Albert Chan Wrote:  Ideally, cm^2 should be left out, and put back at the end.

As a former Physics student (eons ago, for one and a half year), I usually don’t leave them out either. But I did this time as there was no way to make a mistake on this one.

For some reason (perhaps a forgotten knowledge) I had a hunch the sums of the areas of opposite regions would equal each other. I tried two or three examples in scale and it proved right. Hopefully my graphical proof us valid and clear, despite mistakes like S1’ + S2” instead of S1’ + S2’.

Once I had a hard time trying to impose my point without a proper proof, so I’ve been avoiding participating in these kind of discussions, but I thought this problem was worth being presented here. I’m glad you and others have liked it.

Gerson.
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 Messages In This Thread "What is the area? You should be able to solve this" - Gerson W. Barbosa - 08-06-2018, 06:53 PM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-06-2018, 09:12 PM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-07-2018, 02:41 AM RE: "What is the area? You should be able to solve this" - Jim Horn - 08-06-2018, 09:14 PM RE: "What is the area? You should be able to solve this" - ijabbott - 08-06-2018, 09:16 PM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-06-2018, 10:08 PM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-06-2018, 10:52 PM RE: "What is the area? You should be able to solve this" - Robert VM - 08-07-2018, 07:16 PM RE: "What is the area? You should be able to solve this" - Gerson W. Barbosa - 08-07-2018, 12:12 AM RE: "What is the area? You should be able to solve this" - Thomas Klemm - 08-07-2018, 12:41 AM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-07-2018, 12:57 AM RE: "What is the area? You should be able to solve this" - Gerson W. Barbosa - 08-07-2018 01:53 AM RE: "What is the area? You should be able to solve this" - Gerson W. Barbosa - 08-07-2018, 01:11 AM RE: "What is the area? You should be able to solve this" - Diego Diaz - 08-07-2018, 02:10 AM RE: "What is the area? You should be able to solve this" - Pekis - 08-07-2018, 08:59 AM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-07-2018, 02:20 PM RE: "What is the area? You should be able to solve this" - Robert VM - 08-07-2018, 07:24 PM RE: "What is the area? You should be able to solve this" - tpugsley - 08-08-2018, 01:11 PM RE: "What is the area? You should be able to solve this" - Albert Chan - 08-08-2018, 01:51 PM RE: "What is the area? You should be able to solve this" - Voldemar - 08-08-2018, 04:44 PM RE: "What is the area? You should be able to solve this" - roadrunner - 08-08-2018, 05:03 PM