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4 : 3
4y : 3y
luas = d1 x d2 x 1/2
96 = 4y x 3y x /12
96 = 2y x 3y
96 = 6y²
y² = 96/6
y² = 16
y = √16
y = 4
d1 = 4y = 4 x 4 = 16 cm
d2 = 3y = 3 x 4 = 12 cm
cari sisi2nya
√(16:2)² + (12:2)²
√8²+6²
√64 + 36
√100
=√10²
=10
sisinya = 10 cm
keliling = 4s
keliling = 4 x 10 cm = 40 cm