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Byju's Answer
Standard VII
Mathematics
Area of a Circle
Chords equidi...
Question
Chords equidistant from the centre of a circle are equal in length.
We now take an example to illustrate the use of the above results:
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Solution
REF.Image
Given,
d
1
=
d
2
As perpendicular from center bisects the chord,
⇒
B
M
−
l
1
2
,
N
D
=
l
2
2
In
Δ
O
M
B
, by Pythagoras,
O
B
2
=
d
2
1
+
(
l
1
2
)
2
Also in
Δ
O
N
D
,
O
D
2
=
d
2
2
+
(
l
2
2
)
2
As OB=OD = radius
⇒
(
l
1
2
)
2
=
(
l
2
2
)
2
⇒
l
1
=
l
2
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