sebuah tabung dg tinggi 35 cm mempunyai volume 5,39 liter . tentukan panjang diameter alasnya?

V = 22/7 × r × r × 35
V = 22 × r × r × 5
5,39 dm^3 = 22 × r × r × 35
5.390 cm^3 = 110 × r × r
5.390 / 110 = r × r
49 = r × r
r = 7 cm
diameter = 7 × 2 = 14 cm

V = πr^2t
5390 = 22/7 x r^2 x 35
5390 = 22 x r^2 x 5
5390 = 110 r^2
r^2 = 5390/110
r^2 = 49
r = √49
r = 7 cm
d = 14cm