College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.3 - Geometry Essentials - R.3 Assess Your Understanding - Page 37: 49

Answer

64 square feet

Work Step by Step

We know that the area that we want to find is the difference of the areas of the larger and smaller squares. Thus, we obtain: $$A= s^2 \\ A= 10^2 \\ A= 100$$ $$A=s^2 \\ A=6^2 \\ A=36$$ Now, we find the area of the border: $$ A= 100 -36 =64$$
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