hey thank rl.bhat for the welcome.
so i think i got it... first 16=4*P(x) where x=2 therefor P = 2
2nd y^2=4(2)(12)
Y^2 = 96
y=4 \sqrt{6}
then 2y = 19.6 meters
Homework Statement
A Parabolic archway is 12 meters high at the vertex, at a height of 10 meters, the width of the archway is 8 meters. How wide is the archway at ground level?
Homework Equations
given in the picture it has (-4,10) and (4,10) along with vertex (0 ,12)
The Attempt at...