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Maka, p = 3x dan l = 2x
L = p . l
96 = 3x . 2x
96 = 6x²
x² = 16
x = 4
maka, p = 12 dan l = 8
K = 2 ( p + l )
K = 2( 12 + 8 )
K = 40 (b)
Semoga dapat membantu :)
96 = 3a x 2a
96 = 6a²
a² = 96/6 = 16
a = 4
panjang = 3 x 4 = 12 cm
lebar = 2 x 4 = 8 cm
keliling = 2(p+l) = 2(12+8) = 2(20) = 40 cm