# 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.[1]

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.