Question

d l calculations (e = d/l) eccentricity (e)
ellipse #1 7 17.5 7/17.5 = 0.4
ellipse #2 4 14 4/14 = 0.3

Explanation:

Step1: Recall eccentricity formula

The formula for eccentricity of an ellipse is $e = \frac{d}{L}$, where $d$ and $L$ are given values for each ellipse.

Step2: Calculate for Ellipse #1

For Ellipse #1, $d = 7$ and $L=17.5$. So $e_1=\frac{7}{17.5}=0.4$.

Step3: Calculate for Ellipse #2

For Ellipse #2, $d = 4$ and $L = 14$. So $e_2=\frac{4}{14}\approx0.3$.

Answer:

Ellipse #1 eccentricity: $0.4$
Ellipse #2 eccentricity: $0.3$