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Verified answer
11.C 224 cm212.A 80 cm
Maaf cuma logika
luas tembereng = (22/7 x 28²/4) - (28²/2)
= 616 - 392
= 224 cm²
jawaban : C
12.
CD = 150°/60° x 24 = 60 cm²
jawaban : B