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x.360 = 6/πr²
x.360 = 6/3,14.16
x.360 = 6/50,24
16.x = 6.360
16.x = 2160
x = 135
jadi, sudut POR = 135 derajat
135/360 = panjang busur/keliling lingkaran
135/360 = x/2πr²
135/360 = x/2.3,14.4
135/360 = x/25,12
3/8 = x/25,12
x. 8 = 3.25,12
8. x = 75,36
x = 75,36/8
x = 9,42
jadi, panjang busur = 9,42