Thread: problem solving

hey guys so im stuck again

the question is

A square has an area of 400cm2
what is the length of each side?

i know its pretty easy but im sort of clueless, thanks for any help, and i apologize if im in the wrong forum

Area is generally: . But since you know its a square its or , whichever you prefer. Then you put the numbers you know in the equation.

then remove the ^2, which is called "squared" for a reason. Square root..

I'm sure you can do the rest.