35) \((\sqrt{27}+\sqrt{3})\cdot\sqrt{3}\)

\(\sqrt{27}=3\sqrt{3}\).

\((\sqrt{27}+\sqrt{3})\sqrt{3}=(3\sqrt{3}+\sqrt{3})\sqrt{3}=4\sqrt{3}\cdot\sqrt{3}=12\).

Ответ: 12