V=1/2x*3x*4x=6x³
6x³=384cm³
x³=64cm³
x=8cm
3x=3*8cm=24cm
(4cm)²+(12cm)²=a²
16cm²+144cm²=a²
a²=160cm²
a=4√10cm
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V=1/2x*3x*4x=6x³
6x³=384cm³
x³=64cm³
x=8cm
3x=3*8cm=24cm
(4cm)²+(12cm)²=a²
16cm²+144cm²=a²
a²=160cm²
a=4√10cm