2.54 cm=1 inch: 4cm =1.57in, so roughly it is about 1 and a 1/2 inch. The rest of the world uses the metric system, just us here in the usa still use the in/foot/oz units. Have fun learning. Good luck.
Answered 9/22/2019
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Centimeters: One inch equals 2.54 cms. 4 cm is just over 1 1/2 inches. If you are talking about cervix dilation for a woman in labor, fully dilated is usually 10 cm.
Answered 12/9/2013
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About 1 1/2 inches : 1 inch = 2.54 centimeters. Therefore 1.57 inches = 4 cm.
Answered 5/30/2013
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