Vt=π×r²×t
1540=22/7×7²×t
1540=154t
t=1540:154
t=10 cm
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Vt=π×r²×t
1540=22/7×7²×t
1540=154t
t=1540:154
t=10 cm
1540= 22/7 x 7 x7 xt
1540 = 154t
10 = t
r= 7 krn dianeternya 14