"What is the area? You should be able to solve this"
08-08-2018, 01:51 PM (This post was last modified: 08-08-2018 01:53 PM by Albert Chan.)
Post: #19
 Albert Chan Senior Member Posts: 1,676 Joined: Jul 2018
RE: "What is the area? You should be able to solve this"
There is another way to solve top right area without inner square:

Let P = (x,y), inside the square with side = 2
With P, square splitted into 4 triangles, all with base=2, thus triangle area = height

Triangle Area: Left, Bottom, Right, Top = x, y, 2-x, 2-y

SB = 1/2 (Left + Bottom) = (x + y)/2
SX = 1/2 (Right + Top) = 2 - (x + y)/2

SB + SX = 2
SA + SC = 2*2 - (SB + SX) = 4 - 2 = 2

SX = 2 - SB = SA+ SC - SB = (16 + 32 - 20) cm^2 = 28 cm^2
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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

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