Jawaban:
no 1.
Luas alas = 12cm x 12 cm = 144cm²
Luas sisi tegak =( ½ x 12cm x 9cm) x 4 = 216 cm²
Luas permukaan = 144 cm² + 216cm² = 360 cm²
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Jawaban:
no 1.
Luas alas = 12cm x 12 cm = 144cm²
Luas sisi tegak =( ½ x 12cm x 9cm) x 4 = 216 cm²
Luas permukaan = 144 cm² + 216cm² = 360 cm²