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=(2x10x13)+(2x10x12)+(2x13x12)
=260+240+312
=812 cm^2
V= plt=10x13x12=1560cm^3
=2(10 x 13 + 10 x 12 + 13 x 12)
=2(130+120+156)
=2(406)
=812 cm²
V=p l t
=10 x 13 x 12
=1560 cm³
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