SEBuah tabung mempunyai luas selimut 440cm² ,tinggi 10cm,dan v:22/7 volume tabung tersebut adalah
liliput01
Diket: Tabung L selimut = 440 cm² t = 10 cm Dit: V....? L s = 2πrt 440 = 2 x 22/7 x r x 10 440 x 7 = 2 x 22 x 10 x r 3080 = 440 r r = 3080/440 r = 7 cm , V tabung = πr²t V = 22/7 x 7² x 10 V = 22 x 7 x 10 V = 1540 cm³
L selimut = 440 cm²
t = 10 cm
Dit: V....?
L s = 2πrt
440 = 2 x 22/7 x r x 10
440 x 7 = 2 x 22 x 10 x r
3080 = 440 r
r = 3080/440
r = 7 cm
,
V tabung = πr²t
V = 22/7 x 7² x 10
V = 22 x 7 x 10
V = 1540 cm³