" If distance between directrices of a rectangular hyperbola is "10," then distance between its foci will be "

If the distance between two directrices of a rectangular hyperbola is 15, then the distance between its foci in units is:

If the distance between the directrices of a rectangular hyperbola is 10 unit, then the distance between its foci is-

The distance between two directrices of a rectangular hyperbola is 10 units. Find the distance between its foci.

The distance between two directrices of a rectangular hyperbola is 10 units. Find the distance between its foci.

The distance between two directrices of a rectangular hyperbola is 10 units. Find the distance between its foci.

The distance between two directrices of a rectangular hyperbola is 10 units.Find the distance between its foci.

The distance between two directrices of a rectangular hyperbola is 10 units. Find the distance between its foci.

The distance between two directrices of a rectangular hyperbola is 10 units. Find the distance between its foci.

The distance between the vertices of a hyperbola is half the distance between its foci and the length of its semi-conjugate axis is 6. Referred to its axes of coordinates, find the equation of the hyperbola.

If (distance between directrices ) = 3 (distance between foci) , then e =