ПОМОГИТЕ! СРОЧНО! Сравните числа: 1) 2√5 и √45; 2) √27 и 4√3; 3) 5√7 и √63; 4) 7√2 и √72

Решите задачу:

$1) \\ 2 \sqrt{5} \ \textless \ \sqrt{45} \\ 2\sqrt{5}=4,47\\ \sqrt{45} =6,70\\\\2) \sqrt{27} \ \textless \ 4 \sqrt{3} \\ \sqrt{27} =5,19\\ 4\sqrt{3} =6,92\\\\ 3)\\ 5 \sqrt{7} \ \textgreater \ \sqrt{63} \\ 55 \sqrt{7}=13.2\\ \sqrt{63} =7.93\\\\ 4)\\ 7 \sqrt{2} \ \textgreater \ \sqrt{72} \\ 7\sqrt{2}=9.89\\ \sqrt{72}=8.48$