Assertion: erect penis | /r/HasProperty | 5.16 inches long
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text: The average flaccid penis was 3.58 inches long (about 9 cm) and 3.66 inches in girth, while the average erect penis was 5.16 inches long (about 13 cm) and 4.59 inches in circumference (about 11.7 cm), according to results in BJU International.