Luas arsiran
= (6 + 10 + 8)(10) - (1/2 × 16 × 6) - (1/2 × 18 × 10) - (4 × 6)
= 240 - 48 - 90 - 24
= 78 cm²
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Luas arsiran
= (6 + 10 + 8)(10) - (1/2 × 16 × 6) - (1/2 × 18 × 10) - (4 × 6)
= 240 - 48 - 90 - 24
= 78 cm²