## Question

###### Parabotic reflector(a) The focal length of the (finite) paraboloid in the figure is the distance $p$ between its vertex and focus. Express $p$ in terms of $r$ and $h$(b) A reflector is to be constructed with a focal length of 10 feet and a depth of 5 feet. Find the radius of the reflector.(FIGURE CAN NOT COPY)

Parabotic reflector (a) The focal length of the (finite) paraboloid in the figure is the distance $p$ between its vertex and focus. Express $p$ in terms of $r$ and $h$ (b) A reflector is to be constructed with a focal length of 10 feet and a depth of 5 feet. Find the radius of the reflector. (FIGURE CAN NOT COPY)

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