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Byju's Answer
Standard VII
Mathematics
Major Arc, Minor Arc and Semicircular Arc
Area of a sec...
Question
Area of a sector of a circle of radius
15
c
m
is
30
c
m
2
. Find the length of the arc of the sector.
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Solution
Area of sector of circle
=
30
c
m
2
radius of circle
=
15
c
m
Area of sector
=
θ
360
×
π
r
2
θ
360
=
A
π
r
2
=
30
π
×
15
×
15
=
2
15
π
now length of arc
=
2
π
r
=
θ
360
=
2
π
×
15
×
2
15
Length of arc
=
4
c
m
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