Question

. The lengths of two sides of a triangle are 5cm and 7cm and the third side will fall between ____ and ______.

Answer 1

$we \: know \: that \\ sum \: of \: two \: side > \: third \: side \\ difference \: of \: two \: side < \: third \: side \\ (5 + 7)cm > third \: side \: > (7 - 5)cm \\ 12cm > third \: side \: > 2 \: cm \\ so \\ the \: third \: side \: will \: fall \: in \: \\ between \: 2cm \: and \: 12cm.$