Question

(a) √0.006241 using √6241=79

Answer 1

$\sqrt{0.006241 } \\ = \sqrt{ \frac{6241}{1000000} } \\ = \frac{ \sqrt{6241} }{ \sqrt{ {10}^{6} } } \\ = \frac{79}{1000} \\ = 0.079$

Answer 2

√ 0.006241=√6241/1000000
=79/1000=0.0079