Find the degree measure of the angle subtended at the centre of a circle of radius 100 cm by an arc of length 22 cm. (Useπ=
7
22
)
Answers
Answered by
0
Answer:
We know that in a circle of radius r unit, if an arc of length l unit
subtends an angle θ radian at the centre, then θ= 1/r
Therefore, for r=100 cm, 1=22 cm, we have
θ=10022radian=π180×10022degree=22×100180×7×22 degree
=10126degree=1253degree=12∘36′ ,[∵1∘=60′]
Answered by
0
Answer:
12°36'
Step-by-step explanation:
GIVEN.
r=100cm,l=22cm,thetha=?
NOW,
l=r thetha
therefore: thetha=l/r
=22/100
=11/50 c
=11/50×180/pi
=63°/5 = 12°36'
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