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BD = d2
L = d1.d2/2
150 = 4x . 3x /2
150.2 = 4x . 3x
300 = 12x
x = 300/12
x = 25 cm
AC : BD = 4 : 3
AC = 4.25
= 100 cm
BD = 3.25
= 75 cm
L = 100.75/2
= 3750
maaf klo salah