2)
The radius of a circle is 9 cm. Find the
length of an arc of this circle which
cuts off a chord of length, equal to
length of radius.
Answers
Answered by
1
Step-by-step explanation:
OA=9cm=OB=OC
CB=9cm
Given,
chord CB=9cm
radii OC=OB=9cm
∠COB=60
o
(as triangle is an equilateral triangle)
so, length of arc CB=(
360
o
sectorangle
)×2πr
=
360
o
60
o
×2π×9
=
6
18π
=3πcm.
Attachments:
Similar questions