Question

qual e a raiz quadrada de 49/1.600

Answer 1

$\sqrt{ \frac{49}{1600} } =\sqrt{ \frac{ 7^{2} }{16*100} } =\sqrt{ \frac{ 7^{2}}{ 4^{2}* 10^{2} } } =\sqrt{ \frac{ 7^{2}}{ (4*10) ^{2} } } =\sqrt{ \frac{ 7^{2}}{ 40^{2} } } = \frac{ \sqrt{7^{2}} }{ \sqrt{40^{2} } } = \frac{7}{40}$