A'B' = 12 × 3 = 36 cm
A'C' = 9 × 3 = 27 cm
[tex]L ΔA'B'C = \frac{36.27}{2} cm {}^{2} = 486cm {}^{2} [/tex]
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PENYELESAIAN
A'B' = 12 × 3 = 36 cm
A'C' = 9 × 3 = 27 cm
[tex]L ΔA'B'C = \frac{36.27}{2} cm {}^{2} = 486cm {}^{2} [/tex]
[tex]by \: star97[/tex]