Find the area plzz i don’t remember how to do it

What is the smallest integer n such that n\sqrt{2} is greater than 20

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table