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192 = 4y x 3y
192 = 12y
y = 192/12
y = 16 cm
maka,alas = 4y = 4 x 16 = 64 cmdan tinggi = 3y = 3 x 16 = 48 cm
192 cm² = 4y×3y
192 cm² = 12y²
y² = 192÷12
y² = 16
y = √16
y = 4 cm
Alas = 4y
Alas = 4×4
Alas = 16 cm
Tinggi = 3y
Tinggi = 3×4
Tinggi = 12 cm