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OpenStudy (anonymous):
A radio telescope has a parabolic surface as shown below. If the telescope is 1 m deep and 8 m wide, how far is the focus from the vertex?
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OpenStudy (anonymous):
OpenStudy (anonymous):
this is the picture
OpenStudy (anonymous):
Please help!!
OpenStudy (mertsj):
Are we to assume that the focus is on that horizontal line? Is there any more information given than what you wrote?
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