Using A Calculator

Question 1:

\sqrt{3.355}

1.8316659084014

Question 2:

\sqrt[3]{3366}

14.986654797225

Question 3:

\frac{6.86 + 3.19}{1.29 - 2.36}

-9.392523364486

Question 4:

\frac{{3.5}^{2}}{\sqrt{{7.5}^{3} + 8^{2}}}

0.55574275781461