Penjelasan dengan langkah-langkah:
L = 1/2 × (4+5) × (√15^2 - (4+5)^2 )
L = 9/2 × √225 - 81
L = 9/2 × √144
L = 9/2 × 12
L = 54 cm^2
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Penjelasan dengan langkah-langkah:
L = 1/2 × (4+5) × (√15^2 - (4+5)^2 )
L = 9/2 × √225 - 81
L = 9/2 × √144
L = 9/2 × 12
L = 54 cm^2