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Anybody know the answer ?
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4 votes
Anybody know the answer ?

Anybody know the answer ?-example-1
User Lucky Mike
by
7.5k points

1 Answer

4 votes
C=2πr
We have 3/4 of circumference
(3π/2)*2π=3/4.
and it is equal 5π/2.
(3/4)*C=(3/4)*2πr
5π/2 = 6πr/4
5/2=6r/4
r=(5/2)*(4/6)=(5*4)/(2*6)=5/3
r=5/3
User Kostas Tsoleridis
by
7.9k points
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