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L.Segitiga = axt / 2 = 6x 15 / 2 = 45
karena ada 2 segitiga, jadi = 45x2 = 90
L. Persegi panjang 1 = pxl = 24x15 = 360
L. Persegi panjang 2 = pxl = 24x6 = 144
Ltotal = 90+360+144= 594