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r=3,5
dit:t=......
penyelesaian:
V=π×r kuadrat×t
385=22/7×3,5×3,5×t
385=38,5×t
t=385/38,5=10 cm
5.dik:luas alas =320 cm
t=6 cm
dit:V=......
penyelesaian:
V=luas alas ×tinggi
V=320×6
V=1920 cm