luas a
luas b
luas c
luas d
↓
luas permukaan
= luas a + b + c + d
= 900 + 315 + 913.5 + 495
= 2623,5 cm²
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luas a
luas b
luas c
luas d
↓
luas permukaan
= luas a + b + c + d
= 900 + 315 + 913.5 + 495
= 2623,5 cm²