You have 20 seconds (starting at the end of reading the puzzle)
to validate or to disprove the following formula of calculating
the area of a triangle:

S=1/3* ((2AB/C)+(2AC/B)+(2BC/A)).

where the sides A,B & C are represented by three different Fibonacci numbers.

A=(s(s-a)(s-b)(s-c))^(1/2) is Heron's formula. The letter T and the delta sign are also sometimes used.

It is understood that A is an area, but I see no reason in principle why A shouldn't be written as B, C, D, ... or even S.

Posted by broll on 2014-09-10 00:14:23