SOLUTION: A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 9mts.if the distance across (diameter)& the top of the mirror is 160cm.how deep

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 9mts.if the distance across (diameter)& the top of the mirror is 160cm.how deep      Log On


   

Question 1167131: A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 9mts.if the distance across (diameter)& the top of the mirror is 160cm.how deep is the mirror at the middle?
Answer by ikleyn(52799) About Me  (Show Source):
You can put this solution on YOUR website!
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What is this unit of length in your post, in this fragment " the distance from the vertex to the focus is 9mts " ?


Never heard about such a unit . . .