Hey I'm new to the forums. *Claps applauding himself* Anyway exams are coming with Math on Wednesday and I'm just going over stuff. My problem right now is with rearranging. V = 1/3(pie)(r)^2h ; h The 1/3 is a fraction multipled by pie *ed by r(squared) * h. Finding for H. I came up with squareroot(3V/(pie)r = h If tats correct I'm wondering why when removing the r^2 by using squareroot that it doesnt affect the rest of the equation on that side. Next question: V = 4/3(pie)r^3 ; pie V / 4/3R^3 = pie (That is what I got) Also I see people using some sort of program to write equations out is there anywhere to download this thing? **EDIT** My apologies I just noticed the homework help zone after I posted lol.