Using A Calculator

Question 1:

\sqrt{454}

21.307275752663

Question 2:

\sqrt[4]{273.6}

4.067045426659

Question 3:

\frac{5.63 + 5.58}{3.5 - 4.69}

-9.4201680672269

Question 4:

\frac{{7.8}^{3}}{\sqrt{5^{2} + {3.6}^{2}}}

77.023048960898