luas balok
= 10x8x4 + 10x10
= 320 + 100
= 420cm²
luas limas
=13x10/2 x 4
= 130 x 2
= 260 cm²
total
= 420 + 260
= 680cm²
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luas balok
= 10x8x4 + 10x10
= 320 + 100
= 420cm²
luas limas
=13x10/2 x 4
= 130 x 2
= 260 cm²
total
= 420 + 260
= 680cm²