Find the side of a cube whose surface area is 3600 cm?

Well all cubes have 6 sides so 3600/6=800 square cms per side so you get x squared=800. Then i believe you take the square root of that to get 28.2842712. If you check it 28.2842712(28.2842712)=799.99996903087824. That means 28.2842712 is not the exact answer but is very close.