Find the radius 'r' | A Nice Geometry Problem | Math Olympiad

Find the radius 'r' | A Nice Geometry Problem | Math Olympiad Join this channel to get access to perks:    / @mathbooster   MEMBERS OF THIS CHANNEL •••••••••••••••••••••••••••••••••••••••• Mr. Gnome ஆத்தங்கரை சண்முகம் Εκπαιδευτήρια Καντά 堤修一 Sidnei Medeiros Vicente Sambasivam Sathyamoorthy Muhtar Samedov Gerard van Bemmel Petr'ahcz Khusi Wala Gopal Yadav Sam Fatih Ekşioğlu