Using A Calculator

Question 1:

\sqrt{451}

21.236760581595

Question 2:

\sqrt[5]{75.25}

2.3730194664447

Question 3:

\frac{9.74 + 9.06}{7.27 - 6.37}

20.888888888889

Question 4:

\frac{{4.9}^{3}}{\sqrt{{6.8}^{3} + {1.1}^{3}}}

6.6207565722135