Final answer:
To find the eccentricity (e) of an ellipse, divide the distance (f) from the center of the ellipse to one of its foci by half the long axis (a) of the ellipse.
Step-by-step explanation:
Step-by-step explanation:
The eccentricity (e) of an ellipse can be calculated by dividing the distance (f) from the center of the ellipse to one of its foci by half the long axis (a) of the ellipse. So, the formula for eccentricity is:
e = f / (0.5a)
For example, if the distance from the center of the ellipse to one of its foci is 6 cm and the long axis of the ellipse is 10 cm, the eccentricity can be calculated as:
e = 6 / (0.5*10) = 0.6