<prompt> Length of small intestine is:4 metres6 metres9 metres10 metres  <response>: Ans. B i.e. 6 metresSmall intestine dimensionsThe average length of the small intestine in an adult human male is 6.9 m 22 feet 6 inches, and in the adult female 71 m 23 feet 4 inches.It can vary greatly, from as sho as 4.6 m 15 feet to as long as 9.8 m 32 feet.It is approximately 2.5-3 cm in diameter. 