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Standard VII
Mathematics
Circumference of a Circle
Measure of an...
Question
Measure of an arc of a circle is
80
∘
and its radius is
18
cm. Find the length of the arc.
(
π
=
3.14
)
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Solution
Length of an arc
=
θ
360
×
2
π
r
=
80
o
360
o
×
2
×
3.14
×
18
=
8
×
3.14
c
m
=
25.12
c
m
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