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Circles P and Q have radii 1 and 4 respectively and are externally tangent at point A. Point B is on P and point C is on Q such that BC is a common external tangent of the two circles. A line L through A intersects P again at D and intersects Q again at E. Points B and C lie on the same side of the line L and the areas of triangle DBA and triangle ACE are equal. Find this common area.
Determine what this cipher says, and the method of encryption, using the following hints:
It is not a simple substitution cipher.
Both the original plain text message and the encrypted message contain 270 characters (maybe with meaningless filler characters at the end).
Only one rather simple method of encryption has been used.
The encryption method is fairly robust. In other words, an error (while encrypting or decrypting) does not scramble the entire remaining message. Some very complicated ciphers have this problem.
In the encrypted text, M and T appear most often, and R appears least often (I do not think these facts help at all).
Both the original plain text and the encrypted message read from left to right.
You might be able to guess the full text after determining only the first three words.
Latest: 
Bonus: 
