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192 = 4y x 3y
192 = 12 y²
16 = y²
y = 4
Alas = 4y = 4x4 = 16 cm
tinggi = 3y = 3x4 = 12 cm
192 = 4y x 3y
192 = 12y
y = 16
panjangnya = 4 x 16 = 64
tinggi = 3 x 16 = 48