Jawabanmu

2014-02-25T19:45:03+07:00
1540=l.axt
1540= \pi x jari jari
1540=22/7xrx10
1540x7/220=r2
49=r2
7=jari-jari
2014-02-25T21:44:47+07:00
V = π×r²×t
V= 22/7 × R×R×10

Jari jari = 7/22 × 1540 = 70 : 10 =7