ফেইসবুক পেইজ ভিজিট ও লাইক দিন। মাননীয় উপদেষ্টা Dutch mathematician Willebrord Snellius (a.k.a. Snel van Royen) released the modern systematic use of triangulation. In 1615 he surveyed the distance from Alkmaar to Breda, around 72 miles (116 km). He underestimated this length by three.five%. The survey was a series https://abdulq520hqx7.blogacep.com/profile