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tinggi tabung = 10 cm
ditanya : volume tabung
jawab
volume tabung = luas alas x tinggi
keliling tabung = 2πr
66 = 2× 22/7 x r
66 x 7 = 2 x 22 x r
r = (66 x 7)/(22 x 2)
r = 21/2 cm
luas alas tabung = keliling tabung x r/2
= 66 x (21/2)/2
= 693/2 cm²
volume tabung = luas alas x tinggi
= 693/2 x 10
= 3465 cm³
jadi volume tabung tersebut adalah 3465 cm³