a) \( \sqrt{729}= \)

Did you know that 729 is actually quite a special number? It’s not just any ordinary number; in fact, it’s a power of 3! More specifically, \(3^6 = 729\). This makes calculating the square root a breeze since \( \sqrt{729} \) is equal to \(3^3\), which is 27. Now, when you run into square roots, remember to check if you can break the number down into its prime factors like we did here with 729. It's a fun way to simplify your math! When in doubt, factor it out! So, next time, think of the prime tree and you'll avoid common mistakes of overlooking perfect squares.