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Coordinate Geometry
hard
0:00.0
Find the radius of the circle
x
2
+
y
2
=
7
x^2 + y^2 = 7
x
2
+
y
2
=
7
.
A
7
B
s
q
r
t
7
\\sqrt{7}
s
q
r
t
7
C
49
D
3.5
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