Volume tabung=3.080 cm³,tinggi=20cm berapa diameterny??

[tex] \geq Bangun ruang sisi lengkung[/tex]

[tex]V = \pi × r^{2} × t[/tex]
22/7 × r^2 × 20 = 3.080
22/7 × r^2 = 3.080/20
22/7 × r^2 = 154
r^2 = 154 × 7/22
r^2 = 49
r = akar 49
r = 7 cm

D = 2r = 2 × 7 = 14 cm