7 cm is longer than 68 mm.
7 inch = 17.78 cm
7x12x2.54 = 213.36 cm
I am guessing it is 7 to 15 cm long
7 inches
By unit of length and distance and conversion ,we can say that 1 m=100 cm 7 m=700 cm
56cm2
I am guessing it is 7 to 15 cm long
42
7 metres
840
It means that the volume of the box is 24*12*7 = 2016 cubic cm