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EASY MATH PROBLEM FOR 10 POINTS!!!

Problem:
What is the smallest integer n such that n√2 is greater than 20? (Note: n√2 means n times √.)2

PLEASE ANSWER CORRECTLY!!!! PLEASEEE! I BEGGG UUUU!!!!!!!!!!!!!!

Respuesta :

n = 15
14root 2 is 19.798...
15 root 2 is 21.213...
(the first number greater than 20)