You can put this solution on YOUR website! Use correct spelling next time...for example, instead of "centee meetre" use "centimeter" or "centimetre." Even then I presume you mean square centimeters instead of centimeters.
To convert, you have to use unit multipliers. For example,
In each of these cases, we simply multiply by a factor of 1 (e.g. 12 in / 1 ft) to cancel the units we don't want until we obtain the desired unit.