In this week of math I learnt that you have to first acknowledge what you know about the question that is being asked, and you have to acknowledge what you don’t.  In a particular question I acknowledge that we didn’t know what the slant height was equal to, but we knew everything else.  I also knew that to solve surface area for a cone you need the slant height.  So I then knew that we had to use pythagorus to solve for the slant height.