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t=3V÷πr²=(3. 1232)÷(22/7.6²)= 3696÷113,14=32,66
s=√(6²+32,66²)=√1102,67=33,2
L=πr (r+t)=22/7.6(6+33,2)=18,85(39,2)=738,92 ≈ 739 cm²