Question

In â–ł a b c , â–łabc, d, e, f are the mid-points of the sides bc, ca and ab respectively. If ab = 7 cm, bc = 8 cm and ac = 9 cm, then find the perimeter of â–ł d e f .

Answer 1

by calculating side of each triangle with pythagorous theory the perimeter comes to be 17.03 cms