For the following exercises, find the principal square root.
23. \(\sqrt{196}\)
24. \(\sqrt{361}\)
25. \(\sqrt{75}\)
26. \(\sqrt{162}\)
27. \(\sqrt{\frac{32}{25}}\)
28. \(\sqrt{\frac{80}{81}}\)
29. \(\sqrt{\frac{49}{1250}}\)
30. \(\frac{2}{4+\sqrt{2}}\)
31. \(4 \sqrt{3}+6 \sqrt{3}\)
32. \(12 \sqrt{5}-13 \sqrt{5}\)
33. \(\sqrt[5]{-243}\)
34. \(\frac{\sqrt[3]{250}}{\sqrt[3]{-8}}\)