Răspuns:
1.
1)
[tex] \sqrt{49 } = 7[/tex]
2)
[tex]6 \sqrt{2} = \sqrt{ {6}^{2} \times 2} = \sqrt{36 \times 2} = \sqrt{102} [/tex]
[tex]5 \sqrt{3} = \sqrt{5 ^{2} \times 3 } = \sqrt{25 \times 3} = \sqrt{65} [/tex]
[tex]6 \sqrt{2} > \sqrt{3} [/tex]
3)
[tex] \sqrt{ {5}^{2} - {3}^{2} } = \sqrt{25 - 9} = \sqrt{16} = 4[/tex]
5)
[tex]p = l \times 4 = 7 \times 4 = 28[/tex]
