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r= 5 cm
panjang garis pelukis= 13 cm
π= 3,14
ditanya
volume?
jawab :
t= √169-√25
= √144
= 12
Volume kerucut = 1/3×(π×r×r)×t
= 1/3×(3,14×5×5)×12
= 1/3× 78,5×12
= 78,5×4
= 314
Jadi, Volume kerucut tersebut adalah 314 cm³