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Karena frekuensi tertinggi 14
22. B
Mat = 360° - (135° + 27° + 90°)
Mat = 360° - 252°
Mat = 108
Sehingga :
108/360° x 80 anak = 24 anak
23. C
78/12 = 6.5
24. B
6 + 5 + 5 + 7 + 3 + 1 = 27
Nilai tengah = 13
Sehingga angkanya 2