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L=d1.d2/2
24=3x(4x)/2
48=12x^2
4=x^2
2=x
maka d1=3x=3(2)=6, d2=4x=4.2=8
Keterangan,
d1 = diagonal 1
d2 = diagonal 2
Diketahui:
L = 24 cm
d1 = 3x ( kita misalkan dengan x )
d2 = 4x
L = 1/2 . d1 . d2
24 = 1/2 . 3x . 4x
24 = 1/2 . 12x
24 = 6x
4 = x
2 = x
Disini, kita telah menemukan nilai x. x = 2 cm
d1 = 3(2) = 6 cm
d2 = 4(2) = 8 cm
Semoga membantu ;)