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Verified answer
Gemar bersepeda = 360° - (130° + 60° + 80°)= 360° - 270°
= 90°
Siswa gemar bersepeda = x
x/65 = 90/130
x = 90/130 x 65
x = 90/2
x = 45
maka Siswa yang gemar bersepeda sebanyak 45 orang