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2014-05-31T22:24:03+07:00
Diagonal 1 = 3/4x
diagonal 2 = x
L belah ketupat = d1 x d2 : 2
600 =  \frac{ \frac{3}{4}x . x}{2}  =  \frac{3}{2}x^{2}
 x^{2} = 600 .  \frac{2}{3}
 x^{2} = 400
x = 20

d1 =  \frac{3}{4} . 20 = 15
d2 = 20
1 5 1