sentence: ( see centimetre ) 1 cm -- 10 millimeters 1 cm -- 0.39 inch 1 cm -- edge of square of area 2 1 cm -- edge of cube of volume 1 ml 1 cm -- approximate width of average fingernail 1.5 cm -- length of a very large mosquito 2 cm -- approximate width of an adult human finger 2.54 cm -- 1 inch 3.1 cm -- 1 attoparsec ( 10 − 18 parsec ) 3.5 cm -- width of film commonly used in motion pictures and still photography 4.3 cm -- minimum diameter of a golf ball 7.3-7 .5 cm -- diameter of a baseball 8.6 cm × 5.4 cm -- dimensions of a typical credit card 1 decimetre lengths between 10 centimetre and 100 centimetres ( 10 − 1 metre and 1 metre ) .