Question

Three girls Amita, Babita and Christina are sitting in a triangularshape at equal distance each having a toy telephone in her hands to talk to each other. Another girl Dhani sits between Babita and Christina such that distance between Dhani and Babita is equal to one third of the distance of Babita and Christina.Show that 9 times the square of distance between Amita and Dhani is 7 times the square of the distance between Amita and Babita

Answer 1

Answer is in the picture above...

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