Answer
4ab
Work Step by Step
We know that the lengths of the sides of the rectangle are 2a and 2b. Thus, the total area is:
$$ A =(2a)(2b) \\ A=4ab$$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 10 - Section 10.3 - Preparing to Do Analytic Proofs - Exercises - Page 468: 37
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