Aromātai
2\sqrt{10}\approx 6.32455532
Tohaina
Kua tāruatia ki te papatopenga
2\sqrt{10}
Tauwehea te 40=2^{2}\times 10. Tuhia anō te pūtake rua o te hua \sqrt{2^{2}\times 10} hei hua o ngā pūtake rua \sqrt{2^{2}}\sqrt{10}. Tuhia te pūtakerua o te 2^{2}.