Answer
True
Work Step by Step
The equation of a circle whose center is at the origin is $x^2 + y^2 = r^2$ where $r$=radius.
The given equation can be written as $x^2=y^2=3^2$.
The equation above has $r=3$.
Thus, the given statement is true
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 1 - Graphs - 1.4 Circles - 1.4 Assess Your Understanding - Page 38: 5
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