Question

22. Considere 2 = 1,41 e 13 = 1,73, determi-
ne, na forma decimal, o valor de:
a) ſ8 c) √50 e) √20o
b) √12
d) ſ6​

Answer 1

a)

$\sqrt{8} = \sqrt{2 \times 4} \\ \sqrt{2} \times \sqrt{4} \\ 1.41 \times 2 \\ 2.82$

b)

$\sqrt{12} = \sqrt{4 \times3} \\ \sqrt{4} \times \sqrt{3} \\ 2 \times 1.73 \\ 3.46$

c)

$\sqrt{50} = \sqrt{25 \times 2} \\ \sqrt{25} \times \sqrt{2} \\ 5 \times 1.41 \\ 7.05$

d)

$\sqrt{6} = \sqrt{2 \times 3} \\ \sqrt{2} \times \sqrt{3} \\ 1.41 \times 1.73 \\ 2.4393$

e)

$\sqrt{200} = \sqrt{100 \times 2} \\ \sqrt{100} \times \sqrt{2} \\ 10 \times 1.41 \\ 14.1$