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2014-04-19T07:02:50+03:00
At=Al+Ab
253=11+Ab
Ab=242
pi*r²=242
r²=242/3,14
r=8,78
Al=pi*r*g
g=generatoarea
11=3,14*8,78*g
11=27,57*g
g=11/27,57
g=0,39
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