You might have heard the answer from Rick Ross' rap song called Power Circle (featuring Kendrick Lamar, Meek Mill, Wale, Stalley & Gunplay). See lyrics below:
A Genius.com contributor explained:
1 kilo = 1 thousand = 1 Grand
Since 1x1=1, the square root of ONE kilo = ONE G.
The boss didn’t do great in school because the real square root of a kilo is around 31-32 grams. Good thing his boy Drizzy is good with numbers…
It also could mean he is at the root of the drug game.
See Top Six Lines From the Six Artists on Rick Ross’s “Power Circle” featured on HuffingtonPost.com to know more.
Speaking of square root, here's how to calculate square root without a calculator, shared by Homeschool Math.