If major and minor axis of an ellipse is 8 and 4 then distance between directrices of the ellipse is-

If the length of the minor axis of an ellipse is equal to the distance between their foci, then eccntricity of the ellipse is _

If the distance foci of an ellipse is 8 and distance between its directrices is 18 , then the equation of the ellipse is

If the length of the minor axis of an ellipse is equal to half of the distance between the foci then the eccentricity of the ellipse is

The distance between the directrices fo an ellipse is four times the distance between their foci. Then the ecentricity fo the ellipse is

Area of the quadrilateral formed by the extremities of major axis and minor axis is 8sqrt(3) . The distance between foci is 4sqrt(2) . Then eccentricity of the ellipse is

The lengths of major and minor axis of an ellipse are 10 and 8 respectively and its major axis is along the Y-axis. The equation of the ellipse referred to its centre as origin is

The lengths of major and minor axis of an ellipse are 10 and 8 respectively and its major axis is along the Y-axis. The equation of the ellipse referred to its centre as origin is

Find the eccentricity of the ellipse if the length of minor axis is equal to half the distance between the foci of the ellipse .

If the length of the major axis of an ellipse is 17/8 times the length of the minor axis, then the eccentricity of the ellipse is

The relationship between, the semi-major axis, seimi-minor axis and the distance of the focus from the centre of the ellipse is