The length of two sides of a triangle are 7 cm and 9 cm. The length of the third side may lie between
(a) 1 cm and 10 cm
(b) 2 cm and 8 cm
(c) 3 cm and 16 cm
(d) 1 cm and 16 cm
By inequality: 9 – 7 < third side < 16. So between 3 and 16 cm.