\(a,=\sqrt{2,25}\cdot\sqrt{400}\cdot\sqrt{\dfrac{1}{4}}=1,5\cdot20\cdot\dfrac{1}{2}=15\\ b,=\sqrt{0,36}\cdot\sqrt{100}\cdot\sqrt{81}=0,6\cdot10\cdot9=54\\ c,=\sqrt{\dfrac{1}{100}\cdot81}=\sqrt{\dfrac{1}{100}}\cdot\sqrt{81}=\dfrac{1}{10}\cdot9=\dfrac{9}{10}\\ d,=\sqrt{0,01\cdot36\cdot3^4}=\sqrt{0,01}\cdot\sqrt{36}\cdot\sqrt{3^4}=0,1\cdot6\cdot9=5,4\)
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