Have you ever heard of an approximation, or rough measurement? Have you ever heard of rounding to the nearest unit? Asking the Biblical value of pi is like asking what is the length of an adult male's forearm from the point of the elbow to the tips of the extended fingers.
And besides, why is a rounding of of pi to 5 decimal points the correct reportage instead of to the nearest cubit? This criticism of an ancient writer's choice of where to stop rounding pi is as ridiculous as me saying that your value of pi is incorrect because it really should be reported as 3.14159265358979. Whoever wrote I Kings had to round pi somewhere or else he would have been writing until he died and he wouldn't have been able to finish the rest of I Kings.
Cordially,