If the lengths of the semi-major and semi-minor axes of an ellipse are 5 and 3 r

Practice Questions

Q1
If the lengths of the semi-major and semi-minor axes of an ellipse are 5 and 3 respectively, what is the distance between the foci?
  1. 4
  2. 6
  3. 8
  4. 10

Questions & Step-by-Step Solutions

If the lengths of the semi-major and semi-minor axes of an ellipse are 5 and 3 respectively, what is the distance between the foci?
  • Step 1: Identify the lengths of the semi-major and semi-minor axes. Here, the semi-major axis (a) is 5 and the semi-minor axis (b) is 3.
  • Step 2: Use the formula to find c, which is c = √(a^2 - b^2).
  • Step 3: Calculate a^2, which is 5^2 = 25.
  • Step 4: Calculate b^2, which is 3^2 = 9.
  • Step 5: Subtract b^2 from a^2: 25 - 9 = 16.
  • Step 6: Take the square root of the result to find c: c = √16 = 4.
  • Step 7: The distance between the foci is given by 2c. So, calculate 2 * c = 2 * 4 = 8.
  • Ellipse Properties – Understanding the relationship between the semi-major axis, semi-minor axis, and the distance between the foci.
  • Distance Formula for Foci – Applying the formula c = √(a^2 - b^2) to find the distance between the foci of an ellipse.
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