The Purplemath Forums

I have this question that I am stumped on, I have changed the numbers to a practice another version so that it is not the exact question on my homework. An arch of a bridge is semielliptical, with major axis horizontal. The base of the arch is a across, and the highest part of the arch is b above th...

noooo haha, now im so cunfused to why its counting my answer to the regular question wrong! i only have 3 tries! haha

Its on an online homework site called webassign. after 3 tries you loose all points possible for the question, I have submitted 2 wrong answers so I only have 1 attempt left to get it correct! I really dont see whats flawed with this unless the homework answer is just incorrect