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Apabila panjang sisi persegi = 28 cm
Maka luas daerah yang diarsir = 1/4 x 28 x 28 = 196 cm²
[32].
Nilai rata-rata = [8 + 7 + 6 + 9 + 5 + 7,5 + 8 + 6,5] / 8 = 57/8 = 7 1/8