Tons of stuff in the bible is wrong. Bob's mentioned pi equalling three, but there's lots of other stuff too.
Chronicles 16:30 says that "the earth: the world also shall be stable, that it be not moved". So no travelling around the sun or rotating on its axis for planet earth. Nosiree. (A static earth is also mentioned in Job a few times, Psalm 104 and all over the place).
Or what about Psalm 19, which says that the sun moves around the earth?
What about Jonah 3:3 which calls Nineveh a city of 3 days journey (about 60 miles in diameter), even though Nineveh was only about 3 miles in diameter when it was dug up?
What about Matthew 13:32, which says that mustard seeds can grow into a trees, when they in fact can't.
There's stuff like hat all through the bible.