Question

Qual a Raiz Quadrada Exata dos números decimais .
A) 3,61
B) 7,84
C) 19,36
D) 53,29

Answer 1

Oi roberta,
a)$a) \sqrt{3,61} = \sqrt{ \frac{361}{100} } = \frac{ \sqrt{361} }{ \sqrt{100} } = \frac{19}{10} = 1,9 \\ b) \sqrt{7,84} = \sqrt{ \frac{784}{100} } = \frac{ \sqrt{784} }{ \sqrt{100} } = \frac{28}{10} = 2,8 \\ c) \sqrt{19,36} = \sqrt{ \frac{1936}{100} } = \frac{ \sqrt{1936} }{ \sqrt{100} } = \frac{44}{10} = 4,4 \\ d)\sqrt{53,29} = \sqrt{ \frac{5329}{100} } = \frac{ \sqrt{5329} }{ \sqrt{100} } = \frac{73}{10} = 7,3$