# Difference between revisions of "Square root of 10"

This article was considered for deletion at Wikipedia on September 2 2019. This is a backup of Wikipedia:Square_root_of_10. All of its AfDs can be found at Wikipedia:Special:PrefixIndex/Wikipedia:Articles_for_deletion/Square_root_of_10, the first at Wikipedia:Wikipedia:Articles_for_deletion/Square_root_of_10. Purge

In mathematics, the square root of 10 is the positive real number that when multiplied by itself gives 10. The approximation Template:Sfrac can be used for the square root of 10. It differs from the correct value by about Template:Sfrac. As of December 2013, its numerical value in decimal form has been computed to at least ten billion digits.

It is an irrational algebraic number. The first sixty significant digits of its decimal expansion are:

Template:Gaps Template:OEIS

It is the product of the square root of two and square root of five.

## Use in approximating Template:Pi

Zhang Heng and Brahmagupta used Template:Radic to approximate Template:Pi in 130 and 640 AD, respectively.