Answer
See below.
Work Step by Step
We know that $b^2=a^2-c^2$. Here $a=50,c=25$, thus $b=\sqrt{50^2-25^2}\approx43.301.$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 7 - Section 7.3 - The Ellipse - 7.3 Assess Your Understanding - Page 525: 71
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