# Math Help - subject changes in formula

1. ## subject changes in formula

y=\frac{3}{x + 2} ; make x the subject
G=\pi a^2 k ; make a the subject

A = 2\pi r^2 + 2\pi r h ; make h the subject

Any help?

Thanks so much! life savers!

2. Please use some spaces, brackets and correct symbols to make reading these easier...

Is 1) $y=\frac{3}{x + 2}$ or $y=\frac{3}{x} + 2$?

Is 2) $G=\pi a^2 k$?

Is 3) $A = 2\pi r^2 + 2\pi r h$?

3. All right and yes, 1) its the first option you put forward.
Would be great help if I could get some answers!