soal nomor 42, 2 akar 1/10 jadi 0,6 itu gmna ya? jawaban dri buku cpns gitu cuma gx tahu 0.6 didapat dri dri mana.

[tex]= 2 \times \sqrt{ \frac{1}{10}} \\ \\=2 \times ( \frac{ \sqrt{1} }{ \sqrt{10} } \times \frac{ \sqrt{10} }{ \sqrt{10} }) \\ \\ =2 \times ( \frac{ \sqrt{1} \times \sqrt{10} }{\sqrt{10} \times \sqrt{10} } ) \\ \\ =2 \times ( \frac{ \sqrt{10} }{10} ) \\ \\ = \frac{2}{10} \times \sqrt{10} \\ \\ =(0,2) \times (3,16) \\ \\ =0,632 [/tex]

0,632 ≈ 0,6

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