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Byju's Answer
Standard XII
Mathematics
Circular Measurement of Angle
The radius of...
Question
The radius of a circle is
14
cm.The angle subtended by an arc of the circle at the centre is
45
∘
.Find the length of the arc.
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Solution
Given that,
r
=
14
cm and
θ
=
45
∘
∴
θ
=
45
∘
=
45
×
π
180
=
π
4
c
Length of the arc
=
l
=
r
θ
=
14
×
π
4
=
7
π
2
=
7
2
×
22
7
=
11
cm
∴
Length of the arc is
11
cm
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