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luas yang yg tdk diarsir ada 3 segitiga
∆1 yg dikiri atas = 1/2 . 2 . 3 = 3
∆2 yg dikirim bawah = 1/2 . 2 . 2 = 2
∆3 yang dikanan = 1/2. 4 . 3 = 6
luas total yg tdk diarsir = 3 + 2 + 6 = 11
maka luas yg diarsir = 24 - 11 = 13
persentasenya = 13/24 x 100% = 13/6 x 25% = (325/6)% = 54 1/6%