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Mathematics
Mathematics
Problem
A circle is centred at
(
a
,
b
)
(a,b)
(
a
,
b
)
and has radius
2
3
2\sqrt{3}
2
3
. Which equation correctly represents this circle? a)
(
x
+
a
)
2
+
(
y
+
b
)
2
=
12
(x+a)^2+(y+b)^2=12
(
x
+
a
)
2
+
(
y
+
b
)
2
=
12
b)
(
x
−
a
)
2
+
(
y
−
b
)
2
=
12
(x-a)^2+(y-b)^2=12
(
x
−
a
)
2
+
(
y
−
b
)
2
=
12
c)
(
x
−
a
)
2
+
(
y
−
b
)
2
=
6
(x-a)^2+(y-b)^2=6
(
x
−
a
)
2
+
(
y
−
b
)
2
=
6
d)
(
x
+
a
)
2
+
(
y
+
b
)
2
=
4
3
(x+a)^2+(y+b)^2=4\sqrt{3}
(
x
+
a
)
2
+
(
y
+
b
)
2
=
4
3
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