Three girls Reshma, Salma and Mandip are playing a game by standing on a circle of radius 5 m drawn in a park. Reshma throws a ball to Salma, Salma to Mandip, Mandip to Reshma. If the distance between Reshma and Salma and between Salma and Mandip is 6 m each, what is the distance between Reshma and Mandip?


Draw perpendicular OA and OB on RS and SM respectively

AR=AS=16=3m
OR=OS=OM=5m. (Radii of the circle) In
OA2+AR2=OR2OA1+(3m2)=(5m)2OA2=(259)m2=16m2OA=4m
ORSM will be a kite (OR = OM and RS = SM).

We know that diagonals of a kite are perpendicular and the diagonal common to both the isosceles triangle is bisected by another diagonal

RCS will be of 90 and RC=CM
Area of ΔORS=12×OA×RS12×RC×OS=12×4×6
RC×5=24RC=4.8RM=2RC=2(4.8)=9.6
Therefore, the distance between Reshma and Mandip is 9.6 m.