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Byju's Answer
Standard IX
Mathematics
Perpendicular from the Center to a Chord Bisects the Chord
Radius of cir...
Question
Radius of circle is
10
c
m
. There are two chords of length
16
c
m
each. What will be the distance of these chords form the centre of the circle?
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Solution
Length of the chord AB
=
16
cm and radius
(
r
)
=
10
cm.
To find:- OM
Construction: Draw a perpendicular OM from centre O such that it bisects the chord AB
Proof: In right angled
Δ
O
M
B
O
B
2
=
O
M
2
+
B
M
2
⇒
(
10
)
2
=
O
M
2
+
(
8
)
2
⇒
100
=
O
M
2
+
64
⇒
O
M
2
=
100
−
64
⇒
O
M
2
=
36
⇒
O
M
=
√
36
⇒
O
M
=
6
cm
∴
Hence, the distance of the chord from the centre of the circle is
6
cm.
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Q.
Radius of circle is 10 cm. There are two chords of length 16 cm each. What will be the distance of these chords from the centre of the circle ?