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In a circle with centre and radius
MATHEMATICS · Multi-part · CBSE · Mathematics · Circles · Circles
Problem
In a circle with centre
O
O
O
and radius
13
cm
13\,\text{cm}
13
cm
, chord
A
B
AB
A
B
is
d
(
O
B
,
A
B
)
=
5
cm
d\,(OB, AB)=5\,\text{cm}
d
(
O
B
,
A
B
)
=
5
cm
away from the centre. (a) Calculate the length of
A
B
AB
A
B
. (b) Find the perpendicular distance from
O
O
O
to
C
D
CD
C
D
.
Related theory
Pythagoras' Theorem
Triangle Properties
Chord Properties
Circles
Perpendicular from centre to a chord
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