Hello Everyone, i'd like to thank you for your replies & support, i have attached here the Layout & some pics of the already installed Access points for your advice, simply i need to know the coverage diameter in square meters, or something, so i can be sure that the whole floor is properly covered.
Please note that there was no Radio Survey done, the placement of the Access points was as shown in the attached photo (highlighted in yellow marks in the layout photo), thanks again.
https://ibb.co/3TjWDm8
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https://ibb.co/CvjvmRs