SOLUTION: a laboratory designed a radio telescope that had a diameter of 360ft and a maximum depth of 38ft. the locator should be located at approximately how many ft above the vertex

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Question 889975: a laboratory designed a radio telescope that had a diameter of 360ft and a maximum depth of 38ft.
the locator should be located at approximately how many ft above the vertex

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Assume the vertex is located at (0,0).
Another point on the parabola would be (360/2,38) or (180,38)
Using the focus form of a parabola,
4fy=x%5E2
4f%2838%29=%28180%29%5E2
f=%28180%29%5E2%2F%284%2838%29%29
f=213.1ft