Question

Each side of a rhombus is 13 cm and one diagonal is 10 cm.Find : the length of its other diagonal

Answer 1

$length \: of \: other \: diagonal = \\ 2( \sqrt{ {13}^{2} - {5}^{2} } ) \\ = 2( \sqrt{169 - 25} ) \\ = 2 \times 12 \\ = 24cm$