How did the agricultural revolution influence cultural diffusion?

Because of the agricultural revolution people were able to stay in one place for a longer period of time which developed into people having more jobs than just farming. People developed more skills and were able to share those skills with other people. 
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Bis the answer i believe

H=   2(area/a+b)h= 2(144/a+b)h= 2(144/18+18)h= 2(144/36)h= 2(4)h=8