AD=100 m and AB=10mThe coordinates of Niharika's flag =(2,25) and the coordinates of Preet's flag =(8,20).A(2,25) and  B(8,20)AB = (20−25)2+(8−2)2​=(−5)2+62​=25+36​=61​Distance between both flags is 61​ m.Rashmi has to place her flag at the midpoint of AB.MIdpoint of AB = (22+8​,225+20​)  = (5,22.5)Rashmi must place her flag along the fifth line at 22.5 m from A.