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"What is the area? You should be able to solve this"
08-07-2018, 07:16 PM (This post was last modified: 08-07-2018 07:22 PM by Robert VM.)
Post: #16
RE: "What is the area? You should be able to solve this"
(08-06-2018 10:52 PM)Albert Chan Wrote:  I have seen the geometric solution ! (no, i did not peek)

Same solution as Albert in post #6
   
I started out by joining the midpoints of the original square hoping to simplify the problem: all triangles. Returning to the matter after an hour or so I noticed de sum of the heights of a pair of opposite triangles being the same as for the other pair.
ha + hc = hb + hx
Bases of the triangles being the same and the red surfaces also the same...
SX + SB = SA + SC
SX = SA + SC - SB = 28

Delightfully simple.
(Lucky day!)
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RE: "What is the area? You should be able to solve this" - Robert VM - 08-07-2018 07:16 PM



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