Answer
$600$ square feet.
Work Step by Step
Since the patio has a form of a rectangle, its area is the product of its two sides, thus the area is: $20\cdot30=600$ square feet.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - 4.3 Solve x(squared) + bx + c = 0 - 4.3 Exercises - Problem Solving - Page 257: 67a
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