
Tofind:The width of the lattice arch at the ground level.

Answer to Problem 98E
The width of lattice arch at ground level is
Explanation of Solution
Given information:
A parabolic arch is
Calculation:
The standard equation for the parabola is
As clear from the figure that the parabola is vertically downwards with vertex at
Now substitute
Now as it is clear from the figure that the parabola passes through the point
Now substitute
Now substitute
Now to find the x-intercepts substitute
So, the distance between both the x-intercepts is
Therefore, the width of lattice arch at ground levelis
Chapter 9 Solutions
Precalculus with Limits: A Graphing Approach
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