No 30,31,32 ada yang bisa ???
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Ka=72
t=15cm
ditanya V..???
ka=4×s
72=4s
s=72/4
s=18 cm
La=s²
=18²
=324
V=La×tinggi
=324×15
=4.860 cm²
31 diket
r=1/2×rusuk
=1/2×12
=6 cm
Ditanya V....??
V=4/3×π×r³
=4/3×π×6³
=288 π cm³