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OpenStudy (thatonegirl_):
Will medal and fan.. A radio telescope has a parabolic surface. If it is 9 meters deep and 12 meters wide, how far is the focus from the vertex?
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OpenStudy (thatonegirl_):
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OpenStudy (thatonegirl_):
and that 12m is the length of it, my drawing isnt very accurate sorry
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