Using A Calculator

Question 1:

\sqrt{445.5}

21.106870919205

Question 2:

\sqrt[5]{6.126}

1.4369292935586

Question 3:

\frac{8.48 + 8.59}{4.52 - 3.52}

17.07

Question 4:

\frac{{6.4}^{3}}{\sqrt{{4.3}^{2} + {3.9}^{3}}}

29.718371340583