ফেইসবুক পেইজ ভিজিট ও লাইক দিন। মাননীয় উপদেষ্টা Dutch mathematician Willebrord Snellius (a.k.a. Snel van Royen) launched the trendy systematic utilization of triangulation. In 1615 he surveyed the space from Alkmaar to Breda, somewhere around 72 miles (116 km). He underestimated this distance by three.five%. The survey was a https://land-survey-companies-bd98776.newsbloger.com/29967979/not-known-details-about-land-survey-experts-bd