A new park design uses part of a city block, but there is already a building in the northwest corner of the block. If the park uses all of the space in the block from AC¯¯¯¯¯¯ to the right, what is the area of the park in the blueprint, rounded to the nearest square cm? Rectangle A B D E is divided by a segment from A to point C on B D. A B measures 10 centimeters and A E measures 21 centimeters. Angles A B D and A E D are right angles and angle A C D measures 150 degrees. A. 87 cm2 B. 105 cm2 C. 123 cm2 D. 210 cm2

Explanation:

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May consider a group  g=({0,1},+)g=({0,1},+)where  ++  will work as the xor operator like we work in boolean algebra. note here, that ‘00’ and ‘11’ are not the usual 0 and 1 that we work with everyday. the elements are  called  ‘00’ and ‘11’ and  may not mean  zero (nothing) and one (single). ‘00’ is the identity for the given binary operator +, meaning that any element operated with ‘00’ gets us that element itself.  for a set  ss  in  g′g′  having more elements than just  {0,1}{0,1}  the values for  a+b∈sa+b∈s, such that  a∈s,b∈sa∈s,b∈s, have to be first defined, only then can you determine the value of  1+11+1. the answer could possibly have been  22  if oanswer is25,000