Using A Calculator

Question 1:

\sqrt{666.6}

25.818597947991

Question 2:

\sqrt[5]{61.19}

2.2768587584578

Question 3:

\frac{9.71 + 2.73}{7.97 - 8.6}

-19.746031746032

Question 4:

\frac{7^{3}}{\sqrt{{5.8}^{2} + {4.7}^{2}}}

45.946199980641