Geometryeasy · Past Paper
What is the center and radius of x^2 + y^2 = 1?
A(0,0), 1
B(1,1), 1
C(0,0), 0
D(1,0), 1
✓ Correct Answer: A — (0,0), 1
This is the unit circle centered at the origin with radius 1.
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