Solve[{a+10000^2/(2*32.2*(40*a)^2)==200-z,40*a^2/2+10000^2/(32.2*40*a)==40*b^2/2+10000^2/(32.2*40*b),b==100-z},{z,a,b}]

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.